diff --git a/ebcc/ansatz.py b/ebcc/ansatz.py
index 6fe3ce7e..a617d5df 100644
--- a/ebcc/ansatz.py
+++ b/ebcc/ansatz.py
@@ -17,6 +17,7 @@
     "QCISD": ("QCISD", "", 0, 0),
     "DCD": ("DCD", "", 0, 0),
     "DCSD": ("DCSD", "", 0, 0),
+    "CCSDt": ("CCSDt", "", 0, 0),
     "CCSDt'": ("CCSDt'", "", 0, 0),
     "CCSD-S-1-1": ("CCSD", "S", 1, 1),
     "CCSD-SD-1-1": ("CCSD", "SD", 1, 1),
@@ -244,6 +245,7 @@ def fermionic_cluster_ranks(self, spin_type="G"):
             "S": [("t1", "ov", 1)],
             "D": [("t2", "oovv", 2)],
             "T": [("t3", "ooovvv", 3)],
+            "t": [("t3", "ooOvvV", 3)],
             "t'": [("t3", "OOOVVV", 3)],
         }
         if spin_type == "R":
diff --git a/ebcc/codegen/GCCSDt.py b/ebcc/codegen/GCCSDt.py
new file mode 100644
index 00000000..5f22f167
--- /dev/null
+++ b/ebcc/codegen/GCCSDt.py
@@ -0,0 +1,1548 @@
+# Code generated for ebcc.
+
+from ebcc import numpy as np
+from ebcc.util import pack_2e, einsum, Namespace
+from ebcc.precision import types
+
+def energy(f=None, v=None, nocc=None, nvir=None, t1=None, t2=None, t3=None, **kwargs):
+    # energy
+    e_cc = 0
+    e_cc += einsum(f.ov, (0, 1), t1, (0, 1), ())
+    x0 = np.zeros((nocc, nocc, nvir, nvir), dtype=np.float64)
+    x0 += einsum(t2, (0, 1, 2, 3), (0, 1, 2, 3))
+    x0 += einsum(t1, (0, 1), t1, (2, 3), (0, 2, 1, 3)) * 2.0
+    e_cc += einsum(v.oovv, (0, 1, 2, 3), x0, (0, 1, 2, 3), ()) * 0.25
+    del x0
+
+    return e_cc
+
+def update_amps(f=None, v=None, space=None, t1=None, t2=None, t3=None, **kwargs):
+    nocc = space.ncocc
+    nvir = space.ncvir
+    naocc = space.naocc
+    navir = space.navir
+    so = np.ones((nocc,), dtype=bool)
+    sv = np.ones((nvir,), dtype=bool)
+    sO = space.active[space.correlated][space.occupied[space.correlated]]
+    sV = space.active[space.correlated][space.virtual[space.correlated]]
+
+    # T amplitudes
+    t1new = np.zeros((nocc, nvir), dtype=np.float64)
+    t1new[np.ix_(so,sv)] += einsum(f.ov, (0, 1), (0, 1))
+    t1new[np.ix_(so,sv)] += einsum(f.oo, (0, 1), t1[np.ix_(so,sv)], (1, 2), (0, 2)) * -1.0
+    t1new[np.ix_(so,sv)] += einsum(f.vv, (0, 1), t1[np.ix_(so,sv)], (2, 1), (2, 0))
+    t1new[np.ix_(so,sv)] += einsum(f.ov, (0, 1), t2[np.ix_(so,so,sv,sv)], (2, 0, 3, 1), (2, 3))
+    t1new[np.ix_(so,sv)] += einsum(t1[np.ix_(so,sv)], (0, 1), v.ovov, (2, 1, 0, 3), (2, 3)) * -1.0
+    t1new[np.ix_(so,sv)] += einsum(t2[np.ix_(so,so,sv,sv)], (0, 1, 2, 3), v.ooov, (0, 1, 4, 3), (4, 2)) * -0.5
+    t1new[np.ix_(so,sv)] += einsum(t2[np.ix_(so,so,sv,sv)], (0, 1, 2, 3), v.ovvv, (1, 4, 2, 3), (0, 4)) * -0.5
+    t1new[np.ix_(so,sv)] += einsum(v.oOvV, (0, 1, 2, 3), t3[np.ix_(so,so,sO,sv,sv,sV)], (4, 0, 1, 5, 2, 3), (4, 5)) * 0.25
+    t2new = np.zeros((nocc, nocc, nvir, nvir), dtype=np.float64)
+    t2new[np.ix_(so,so,sv,sv)] += einsum(v.oovv, (0, 1, 2, 3), (0, 1, 2, 3))
+    t2new[np.ix_(so,so,sv,sv)] += einsum(f.OV, (0, 1), t3[np.ix_(so,so,sO,sv,sv,sV)], (2, 3, 0, 4, 5, 1), (2, 3, 4, 5))
+    t2new[np.ix_(so,so,sv,sv)] += einsum(t2[np.ix_(so,so,sv,sv)], (0, 1, 2, 3), v.oooo, (4, 5, 0, 1), (4, 5, 2, 3)) * 0.5
+    t2new[np.ix_(so,so,sv,sv)] += einsum(t2[np.ix_(so,so,sv,sv)], (0, 1, 2, 3), v.vvvv, (4, 5, 2, 3), (0, 1, 4, 5)) * 0.5
+    t3new = np.zeros((nocc, nocc, naocc, nvir, nvir, navir), dtype=np.float64)
+    t3new += einsum(f.OO, (0, 1), t3[np.ix_(so,so,sO,sv,sv,sV)], (2, 3, 1, 4, 5, 6), (2, 3, 0, 4, 5, 6)) * -1.0
+    t3new += einsum(f.VV, (0, 1), t3[np.ix_(so,so,sO,sv,sv,sV)], (2, 3, 4, 5, 6, 1), (2, 3, 4, 5, 6, 0))
+    t3new += einsum(t2[np.ix_(so,sO,sv,sv)], (0, 1, 2, 3), v.oooV, (4, 5, 0, 6), (4, 5, 1, 2, 3, 6))
+    t3new += einsum(t2[np.ix_(so,so,sv,sV)], (0, 1, 2, 3), v.vvvO, (4, 5, 2, 6), (0, 1, 6, 4, 5, 3)) * -1.0
+    t3new += einsum(v.oooo, (0, 1, 2, 3), t3[np.ix_(so,so,sO,sv,sv,sV)], (2, 3, 4, 5, 6, 7), (0, 1, 4, 5, 6, 7)) * 0.5
+    t3new += einsum(v.OVOV, (0, 1, 2, 3), t3[np.ix_(so,so,sO,sv,sv,sV)], (4, 5, 2, 6, 7, 1), (4, 5, 0, 6, 7, 3)) * -1.0
+    t3new += einsum(v.vvvv, (0, 1, 2, 3), t3[np.ix_(so,so,sO,sv,sv,sV)], (4, 5, 6, 2, 3, 7), (4, 5, 6, 0, 1, 7)) * 0.5
+    x0 = np.zeros((nocc, nocc), dtype=np.float64)
+    x0 += einsum(f.ov, (0, 1), t1[np.ix_(so,sv)], (2, 1), (0, 2))
+    t1new[np.ix_(so,sv)] += einsum(t1[np.ix_(so,sv)], (0, 1), x0, (0, 2), (2, 1)) * -1.0
+    x1 = np.zeros((nocc, nocc), dtype=np.float64)
+    x1 += einsum(t1[np.ix_(so,sv)], (0, 1), v.ooov, (2, 0, 3, 1), (2, 3))
+    t1new[np.ix_(so,sv)] += einsum(t1[np.ix_(so,sv)], (0, 1), x1, (0, 2), (2, 1)) * -1.0
+    x2 = np.zeros((nvir, nvir), dtype=np.float64)
+    x2 += einsum(t1[np.ix_(so,sv)], (0, 1), v.ovvv, (0, 2, 3, 1), (2, 3))
+    t1new[np.ix_(so,sv)] += einsum(t1[np.ix_(so,sv)], (0, 1), x2, (2, 1), (0, 2)) * -1.0
+    x3 = np.zeros((nocc, nocc, nocc, nvir), dtype=np.float64)
+    x3 += einsum(t1[np.ix_(so,sv)], (0, 1), v.oovv, (2, 3, 4, 1), (0, 2, 3, 4))
+    t1new[np.ix_(so,sv)] += einsum(t2[np.ix_(so,so,sv,sv)], (0, 1, 2, 3), x3, (4, 0, 1, 3), (4, 2)) * 0.5
+    x4 = np.zeros((nocc, nocc), dtype=np.float64)
+    x4 += einsum(t2[np.ix_(so,so,sv,sv)], (0, 1, 2, 3), v.oovv, (4, 1, 2, 3), (0, 4))
+    t1new[np.ix_(so,sv)] += einsum(t1[np.ix_(so,sv)], (0, 1), x4, (2, 0), (2, 1)) * -0.5
+    x5 = np.zeros((nocc, nvir), dtype=np.float64)
+    x5 += einsum(t1[np.ix_(so,sv)], (0, 1), v.oovv, (2, 0, 3, 1), (2, 3))
+    t1new[np.ix_(so,sv)] += einsum(x5, (0, 1), t2[np.ix_(so,so,sv,sv)], (2, 0, 3, 1), (2, 3))
+    x6 = np.zeros((nocc, nocc), dtype=np.float64)
+    x6 += einsum(t1[np.ix_(so,sv)], (0, 1), x5, (2, 1), (0, 2))
+    t1new[np.ix_(so,sv)] += einsum(t1[np.ix_(so,sv)], (0, 1), x6, (2, 0), (2, 1)) * -1.0
+    x7 = np.zeros((nocc, nocc, nvir, nvir), dtype=np.float64)
+    x7 += einsum(f.oo, (0, 1), t2[np.ix_(so,so,sv,sv)], (2, 1, 3, 4), (0, 2, 3, 4))
+    t2new[np.ix_(so,so,sv,sv)] += einsum(x7, (0, 1, 2, 3), (0, 1, 3, 2)) * -1.0
+    t2new[np.ix_(so,so,sv,sv)] += einsum(x7, (0, 1, 2, 3), (1, 0, 3, 2))
+    del x7
+    x8 = np.zeros((nocc, nocc, nvir, nvir), dtype=np.float64)
+    x8 += einsum(f.vv, (0, 1), t2[np.ix_(so,so,sv,sv)], (2, 3, 4, 1), (2, 3, 0, 4))
+    t2new[np.ix_(so,so,sv,sv)] += einsum(x8, (0, 1, 2, 3), (1, 0, 2, 3))
+    t2new[np.ix_(so,so,sv,sv)] += einsum(x8, (0, 1, 2, 3), (1, 0, 3, 2)) * -1.0
+    del x8
+    x9 = np.zeros((nocc, nocc, nvir, nvir), dtype=np.float64)
+    x9 += einsum(t1[np.ix_(so,sv)], (0, 1), v.ooov, (2, 3, 0, 4), (2, 3, 1, 4))
+    t2new[np.ix_(so,so,sv,sv)] += einsum(x9, (0, 1, 2, 3), (1, 0, 2, 3))
+    t2new[np.ix_(so,so,sv,sv)] += einsum(x9, (0, 1, 2, 3), (1, 0, 3, 2)) * -1.0
+    del x9
+    x10 = np.zeros((nocc, nocc, nvir, nvir), dtype=np.float64)
+    x10 += einsum(t1[np.ix_(so,sv)], (0, 1), v.ovvv, (2, 1, 3, 4), (0, 2, 3, 4))
+    t2new[np.ix_(so,so,sv,sv)] += einsum(x10, (0, 1, 2, 3), (0, 1, 3, 2))
+    t2new[np.ix_(so,so,sv,sv)] += einsum(x10, (0, 1, 2, 3), (1, 0, 3, 2)) * -1.0
+    del x10
+    x11 = np.zeros((nocc, nocc, nvir, nvir), dtype=np.float64)
+    x11 += einsum(t2[np.ix_(so,so,sv,sv)], (0, 1, 2, 3), v.ovov, (4, 3, 1, 5), (0, 4, 2, 5))
+    t2new[np.ix_(so,so,sv,sv)] += einsum(x11, (0, 1, 2, 3), (0, 1, 2, 3)) * -1.0
+    t2new[np.ix_(so,so,sv,sv)] += einsum(x11, (0, 1, 2, 3), (0, 1, 3, 2))
+    t2new[np.ix_(so,so,sv,sv)] += einsum(x11, (0, 1, 2, 3), (1, 0, 2, 3))
+    t2new[np.ix_(so,so,sv,sv)] += einsum(x11, (0, 1, 2, 3), (1, 0, 3, 2)) * -1.0
+    del x11
+    x12 = np.zeros((nocc, nocc, nvir, nvir), dtype=np.float64)
+    x12 += einsum(v.oOoV, (0, 1, 2, 3), t3[np.ix_(so,so,sO,sv,sv,sV)], (4, 0, 1, 5, 6, 3), (4, 2, 5, 6))
+    t2new[np.ix_(so,so,sv,sv)] += einsum(x12, (0, 1, 2, 3), (1, 0, 3, 2)) * -0.5
+    t2new[np.ix_(so,so,sv,sv)] += einsum(x12, (0, 1, 2, 3), (0, 1, 3, 2)) * 0.5
+    del x12
+    x13 = np.zeros((nocc, nocc, nvir, nvir), dtype=np.float64)
+    x13 += einsum(v.vOvV, (0, 1, 2, 3), t3[np.ix_(so,so,sO,sv,sv,sV)], (4, 5, 1, 6, 2, 3), (4, 5, 6, 0))
+    t2new[np.ix_(so,so,sv,sv)] += einsum(x13, (0, 1, 2, 3), (0, 1, 3, 2)) * -0.5
+    t2new[np.ix_(so,so,sv,sv)] += einsum(x13, (0, 1, 2, 3), (0, 1, 2, 3)) * 0.5
+    del x13
+    x14 = np.zeros((nocc, nocc, nvir, nvir), dtype=np.float64)
+    x14 += einsum(x0, (0, 1), t2[np.ix_(so,so,sv,sv)], (2, 0, 3, 4), (1, 2, 3, 4))
+    t2new[np.ix_(so,so,sv,sv)] += einsum(x14, (0, 1, 2, 3), (0, 1, 3, 2)) * -1.0
+    t2new[np.ix_(so,so,sv,sv)] += einsum(x14, (0, 1, 2, 3), (1, 0, 3, 2))
+    del x14
+    x15 = np.zeros((nocc, nocc, nocc, nvir), dtype=np.float64)
+    x15 += einsum(f.ov, (0, 1), t2[np.ix_(so,so,sv,sv)], (2, 3, 4, 1), (0, 2, 3, 4))
+    x16 = np.zeros((nocc, nocc, nvir, nvir), dtype=np.float64)
+    x16 += einsum(t1[np.ix_(so,sv)], (0, 1), x15, (0, 2, 3, 4), (2, 3, 1, 4))
+    t2new[np.ix_(so,so,sv,sv)] += einsum(x16, (0, 1, 2, 3), (0, 1, 2, 3))
+    t2new[np.ix_(so,so,sv,sv)] += einsum(x16, (0, 1, 2, 3), (0, 1, 3, 2)) * -1.0
+    del x16
+    x17 = np.zeros((nocc, nocc, nocc, nvir), dtype=np.float64)
+    x17 += einsum(t1[np.ix_(so,sv)], (0, 1), v.oooo, (2, 3, 4, 0), (2, 3, 4, 1))
+    t2new[np.ix_(so,so,sv,sv)] += einsum(t1[np.ix_(so,sv)], (0, 1), x17, (2, 3, 0, 4), (2, 3, 1, 4))
+    del x17
+    x18 = np.zeros((nocc, nocc, nocc, nvir), dtype=np.float64)
+    x18 += einsum(t1[np.ix_(so,sv)], (0, 1), v.ovov, (2, 3, 4, 1), (0, 2, 4, 3))
+    x19 = np.zeros((nocc, nocc, nvir, nvir), dtype=np.float64)
+    x19 += einsum(t1[np.ix_(so,sv)], (0, 1), x18, (2, 0, 3, 4), (2, 3, 1, 4))
+    t2new[np.ix_(so,so,sv,sv)] += einsum(x19, (0, 1, 2, 3), (0, 1, 2, 3))
+    t2new[np.ix_(so,so,sv,sv)] += einsum(x19, (0, 1, 2, 3), (0, 1, 3, 2)) * -1.0
+    t2new[np.ix_(so,so,sv,sv)] += einsum(x19, (0, 1, 2, 3), (1, 0, 2, 3)) * -1.0
+    t2new[np.ix_(so,so,sv,sv)] += einsum(x19, (0, 1, 2, 3), (1, 0, 3, 2))
+    del x19
+    x20 = np.zeros((nocc, nvir, nvir, nvir), dtype=np.float64)
+    x20 += einsum(t1[np.ix_(so,sv)], (0, 1), v.vvvv, (2, 3, 4, 1), (0, 2, 3, 4))
+    t2new[np.ix_(so,so,sv,sv)] += einsum(t1[np.ix_(so,sv)], (0, 1), x20, (2, 3, 4, 1), (0, 2, 4, 3)) * -1.0
+    del x20
+    x21 = np.zeros((nocc, nocc, nocc, nocc), dtype=np.float64)
+    x21 += einsum(t1[np.ix_(so,sv)], (0, 1), v.ooov, (2, 3, 4, 1), (0, 2, 3, 4))
+    x22 = np.zeros((nocc, nocc, nvir, nvir), dtype=np.float64)
+    x22 += einsum(t2[np.ix_(so,so,sv,sv)], (0, 1, 2, 3), x21, (4, 0, 1, 5), (4, 5, 2, 3))
+    t2new[np.ix_(so,so,sv,sv)] += einsum(x22, (0, 1, 2, 3), (0, 1, 3, 2)) * 0.5
+    t2new[np.ix_(so,so,sv,sv)] += einsum(x22, (0, 1, 2, 3), (1, 0, 3, 2)) * -0.5
+    del x22
+    x23 = np.zeros((nocc, nocc, nocc, nvir), dtype=np.float64)
+    x23 += einsum(t2[np.ix_(so,so,sv,sv)], (0, 1, 2, 3), v.ooov, (4, 1, 5, 3), (0, 4, 5, 2))
+    x24 = np.zeros((nocc, nocc, nvir, nvir), dtype=np.float64)
+    x24 += einsum(t1[np.ix_(so,sv)], (0, 1), x23, (2, 0, 3, 4), (2, 3, 1, 4))
+    t2new[np.ix_(so,so,sv,sv)] += einsum(x24, (0, 1, 2, 3), (0, 1, 2, 3))
+    t2new[np.ix_(so,so,sv,sv)] += einsum(x24, (0, 1, 2, 3), (1, 0, 2, 3)) * -1.0
+    t2new[np.ix_(so,so,sv,sv)] += einsum(x24, (0, 1, 2, 3), (0, 1, 3, 2)) * -1.0
+    t2new[np.ix_(so,so,sv,sv)] += einsum(x24, (0, 1, 2, 3), (1, 0, 3, 2))
+    del x24
+    x25 = np.zeros((nocc, nocc, nvir, nvir), dtype=np.float64)
+    x25 += einsum(x1, (0, 1), t2[np.ix_(so,so,sv,sv)], (2, 0, 3, 4), (2, 1, 3, 4)) * -1.0
+    t2new[np.ix_(so,so,sv,sv)] += einsum(x25, (0, 1, 2, 3), (0, 1, 3, 2)) * -1.0
+    t2new[np.ix_(so,so,sv,sv)] += einsum(x25, (0, 1, 2, 3), (1, 0, 3, 2))
+    del x25
+    x26 = np.zeros((nocc, nocc, nvir, nvir), dtype=np.float64)
+    x26 += einsum(t1[np.ix_(so,sv)], (0, 1), v.ovvv, (2, 3, 4, 1), (0, 2, 3, 4))
+    x27 = np.zeros((nocc, nocc, nvir, nvir), dtype=np.float64)
+    x27 += einsum(t2[np.ix_(so,so,sv,sv)], (0, 1, 2, 3), x26, (4, 1, 5, 3), (4, 0, 2, 5)) * -1.0
+    t2new[np.ix_(so,so,sv,sv)] += einsum(x27, (0, 1, 2, 3), (0, 1, 3, 2)) * -1.0
+    t2new[np.ix_(so,so,sv,sv)] += einsum(x27, (0, 1, 2, 3), (0, 1, 2, 3))
+    t2new[np.ix_(so,so,sv,sv)] += einsum(x27, (0, 1, 2, 3), (1, 0, 3, 2))
+    t2new[np.ix_(so,so,sv,sv)] += einsum(x27, (0, 1, 2, 3), (1, 0, 2, 3)) * -1.0
+    del x27
+    x28 = np.zeros((nocc, nocc, nocc, nvir), dtype=np.float64)
+    x28 += einsum(t2[np.ix_(so,so,sv,sv)], (0, 1, 2, 3), v.ovvv, (4, 5, 2, 3), (0, 1, 4, 5))
+    x29 = np.zeros((nocc, nocc, nvir, nvir), dtype=np.float64)
+    x29 += einsum(t1[np.ix_(so,sv)], (0, 1), x28, (2, 3, 0, 4), (2, 3, 1, 4))
+    t2new[np.ix_(so,so,sv,sv)] += einsum(x29, (0, 1, 2, 3), (0, 1, 2, 3)) * -0.5
+    t2new[np.ix_(so,so,sv,sv)] += einsum(x29, (0, 1, 2, 3), (0, 1, 3, 2)) * 0.5
+    del x29
+    x30 = np.zeros((nocc, nocc, nvir, nvir), dtype=np.float64)
+    x30 += einsum(x2, (0, 1), t2[np.ix_(so,so,sv,sv)], (2, 3, 4, 1), (2, 3, 4, 0)) * -1.0
+    t2new[np.ix_(so,so,sv,sv)] += einsum(x30, (0, 1, 2, 3), (0, 1, 3, 2)) * -1.0
+    t2new[np.ix_(so,so,sv,sv)] += einsum(x30, (0, 1, 2, 3), (0, 1, 2, 3))
+    del x30
+    x31 = np.zeros((naocc, navir, nocc, nocc), dtype=np.float64)
+    x31 += einsum(t1[np.ix_(so,sv)], (0, 1), v.oOvV, (2, 3, 1, 4), (3, 4, 0, 2))
+    x32 = np.zeros((nocc, nocc, nvir, nvir), dtype=np.float64)
+    x32 += einsum(x31, (0, 1, 2, 3), t3[np.ix_(so,so,sO,sv,sv,sV)], (4, 3, 0, 5, 6, 1), (2, 4, 5, 6))
+    del x31
+    t2new[np.ix_(so,so,sv,sv)] += einsum(x32, (0, 1, 2, 3), (0, 1, 3, 2)) * -0.5
+    t2new[np.ix_(so,so,sv,sv)] += einsum(x32, (0, 1, 2, 3), (1, 0, 3, 2)) * 0.5
+    del x32
+    x33 = np.zeros((nocc, nocc, nocc, nvir), dtype=np.float64)
+    x33 += einsum(v.oOvV, (0, 1, 2, 3), t3[np.ix_(so,so,sO,sv,sv,sV)], (4, 5, 1, 6, 2, 3), (4, 5, 0, 6))
+    x34 = np.zeros((nocc, nocc, nvir, nvir), dtype=np.float64)
+    x34 += einsum(t1[np.ix_(so,sv)], (0, 1), x33, (2, 3, 0, 4), (2, 3, 1, 4))
+    t2new[np.ix_(so,so,sv,sv)] += einsum(x34, (0, 1, 2, 3), (0, 1, 2, 3)) * 0.5
+    t2new[np.ix_(so,so,sv,sv)] += einsum(x34, (0, 1, 2, 3), (0, 1, 3, 2)) * -0.5
+    del x34
+    x35 = np.zeros((naocc, navir), dtype=np.float64)
+    x35 += einsum(t1[np.ix_(so,sv)], (0, 1), v.oOvV, (0, 2, 1, 3), (2, 3))
+    t2new[np.ix_(so,so,sv,sv)] += einsum(x35, (0, 1), t3[np.ix_(so,so,sO,sv,sv,sV)], (2, 3, 0, 4, 5, 1), (2, 3, 4, 5))
+    del x35
+    x36 = np.zeros((nocc, nocc, nvir, nvir), dtype=np.float64)
+    x36 += einsum(t2[np.ix_(so,so,sv,sv)], (0, 1, 2, 3), v.oovv, (4, 1, 5, 3), (0, 4, 2, 5))
+    x37 = np.zeros((nocc, nocc, nvir, nvir), dtype=np.float64)
+    x37 += einsum(t2[np.ix_(so,so,sv,sv)], (0, 1, 2, 3), x36, (4, 1, 5, 3), (0, 4, 2, 5))
+    del x36
+    t2new[np.ix_(so,so,sv,sv)] += einsum(x37, (0, 1, 2, 3), (0, 1, 2, 3))
+    t2new[np.ix_(so,so,sv,sv)] += einsum(x37, (0, 1, 2, 3), (0, 1, 3, 2)) * -1.0
+    del x37
+    x38 = np.zeros((nocc, nocc, nvir, nvir), dtype=np.float64)
+    x38 += einsum(x4, (0, 1), t2[np.ix_(so,so,sv,sv)], (2, 1, 3, 4), (2, 0, 3, 4))
+    t2new[np.ix_(so,so,sv,sv)] += einsum(x38, (0, 1, 2, 3), (0, 1, 3, 2)) * 0.5
+    t2new[np.ix_(so,so,sv,sv)] += einsum(x38, (0, 1, 2, 3), (1, 0, 3, 2)) * -0.5
+    del x38
+    x39 = np.zeros((nvir, nvir), dtype=np.float64)
+    x39 += einsum(t2[np.ix_(so,so,sv,sv)], (0, 1, 2, 3), v.oovv, (0, 1, 4, 3), (2, 4))
+    x40 = np.zeros((nocc, nocc, nvir, nvir), dtype=np.float64)
+    x40 += einsum(x39, (0, 1), t2[np.ix_(so,so,sv,sv)], (2, 3, 4, 1), (2, 3, 4, 0))
+    t2new[np.ix_(so,so,sv,sv)] += einsum(x40, (0, 1, 2, 3), (0, 1, 2, 3)) * -0.5
+    t2new[np.ix_(so,so,sv,sv)] += einsum(x40, (0, 1, 2, 3), (0, 1, 3, 2)) * 0.5
+    del x40
+    x41 = np.zeros((nocc, nocc, nocc, nocc), dtype=np.float64)
+    x41 += einsum(t2[np.ix_(so,so,sv,sv)], (0, 1, 2, 3), v.oovv, (4, 5, 2, 3), (0, 1, 4, 5))
+    t2new[np.ix_(so,so,sv,sv)] += einsum(t2[np.ix_(so,so,sv,sv)], (0, 1, 2, 3), x41, (4, 5, 0, 1), (5, 4, 2, 3)) * -0.25
+    t3new += einsum(x41, (0, 1, 2, 3), t3[np.ix_(so,so,sO,sv,sv,sV)], (2, 3, 4, 5, 6, 7), (1, 0, 4, 5, 6, 7)) * -0.25
+    x42 = np.zeros((nocc, nocc, nocc, nvir), dtype=np.float64)
+    x42 += einsum(t1[np.ix_(so,sv)], (0, 1), x21, (2, 0, 3, 4), (2, 3, 4, 1)) * -1.0
+    x43 = np.zeros((nocc, nocc, nvir, nvir), dtype=np.float64)
+    x43 += einsum(t1[np.ix_(so,sv)], (0, 1), x42, (2, 0, 3, 4), (2, 3, 4, 1)) * -1.0
+    del x42
+    t2new[np.ix_(so,so,sv,sv)] += einsum(x43, (0, 1, 2, 3), (0, 1, 3, 2))
+    t2new[np.ix_(so,so,sv,sv)] += einsum(x43, (0, 1, 2, 3), (1, 0, 3, 2)) * -1.0
+    del x43
+    x44 = np.zeros((nocc, nocc, nocc, nvir), dtype=np.float64)
+    x44 += einsum(t1[np.ix_(so,sv)], (0, 1), x26, (2, 3, 4, 1), (2, 0, 3, 4)) * -1.0
+    x45 = np.zeros((nocc, nocc, nvir, nvir), dtype=np.float64)
+    x45 += einsum(t1[np.ix_(so,sv)], (0, 1), x44, (2, 3, 0, 4), (3, 2, 1, 4)) * -1.0
+    t2new[np.ix_(so,so,sv,sv)] += einsum(x45, (0, 1, 2, 3), (0, 1, 2, 3)) * -1.0
+    t2new[np.ix_(so,so,sv,sv)] += einsum(x45, (0, 1, 2, 3), (0, 1, 3, 2))
+    del x45
+    x46 = np.zeros((nocc, nocc, nocc, nocc), dtype=np.float64)
+    x46 += einsum(t1[np.ix_(so,sv)], (0, 1), x3, (2, 3, 4, 1), (2, 0, 4, 3))
+    t2new[np.ix_(so,so,sv,sv)] += einsum(t2[np.ix_(so,so,sv,sv)], (0, 1, 2, 3), x46, (4, 5, 1, 0), (5, 4, 2, 3)) * 0.5
+    t3new += einsum(x46, (0, 1, 2, 3), t3[np.ix_(so,so,sO,sv,sv,sV)], (3, 2, 4, 5, 6, 7), (1, 0, 4, 5, 6, 7)) * 0.5
+    x47 = np.zeros((nocc, nocc, nocc, nvir), dtype=np.float64)
+    x47 += einsum(t2[np.ix_(so,so,sv,sv)], (0, 1, 2, 3), x3, (4, 1, 5, 3), (4, 0, 5, 2))
+    x48 = np.zeros((nocc, nocc, nvir, nvir), dtype=np.float64)
+    x48 += einsum(t1[np.ix_(so,sv)], (0, 1), x47, (2, 3, 0, 4), (2, 3, 1, 4))
+    t2new[np.ix_(so,so,sv,sv)] += einsum(x48, (0, 1, 2, 3), (0, 1, 2, 3)) * -1.0
+    t2new[np.ix_(so,so,sv,sv)] += einsum(x48, (0, 1, 2, 3), (0, 1, 3, 2))
+    t2new[np.ix_(so,so,sv,sv)] += einsum(x48, (0, 1, 2, 3), (1, 0, 2, 3))
+    t2new[np.ix_(so,so,sv,sv)] += einsum(x48, (0, 1, 2, 3), (1, 0, 3, 2)) * -1.0
+    del x48
+    x49 = np.zeros((nocc, nocc, nvir, nvir), dtype=np.float64)
+    x49 += einsum(x6, (0, 1), t2[np.ix_(so,so,sv,sv)], (2, 1, 3, 4), (0, 2, 3, 4)) * -1.0
+    t2new[np.ix_(so,so,sv,sv)] += einsum(x49, (0, 1, 2, 3), (0, 1, 3, 2))
+    t2new[np.ix_(so,so,sv,sv)] += einsum(x49, (0, 1, 2, 3), (1, 0, 3, 2)) * -1.0
+    del x49
+    x50 = np.zeros((nocc, nocc, nocc, nvir), dtype=np.float64)
+    x50 += einsum(t1[np.ix_(so,sv)], (0, 1), x41, (2, 3, 0, 4), (2, 3, 4, 1)) * -1.0
+    t2new[np.ix_(so,so,sv,sv)] += einsum(t1[np.ix_(so,sv)], (0, 1), x50, (2, 3, 0, 4), (2, 3, 1, 4)) * 0.5
+    del x50
+    x51 = np.zeros((nocc, nocc, nocc, nvir), dtype=np.float64)
+    x51 += einsum(x5, (0, 1), t2[np.ix_(so,so,sv,sv)], (2, 3, 4, 1), (2, 3, 0, 4)) * -1.0
+    x52 = np.zeros((nocc, nocc, nvir, nvir), dtype=np.float64)
+    x52 += einsum(t1[np.ix_(so,sv)], (0, 1), x51, (2, 3, 0, 4), (2, 3, 1, 4))
+    t2new[np.ix_(so,so,sv,sv)] += einsum(x52, (0, 1, 2, 3), (0, 1, 2, 3)) * -1.0
+    t2new[np.ix_(so,so,sv,sv)] += einsum(x52, (0, 1, 2, 3), (0, 1, 3, 2))
+    del x52
+    x53 = np.zeros((nocc, nocc, nocc, nvir), dtype=np.float64)
+    x53 += einsum(t1[np.ix_(so,sv)], (0, 1), x46, (2, 3, 4, 0), (2, 3, 4, 1))
+    t2new[np.ix_(so,so,sv,sv)] += einsum(t1[np.ix_(so,sv)], (0, 1), x53, (2, 3, 0, 4), (3, 2, 1, 4)) * -1.0
+    del x53
+    x54 = np.zeros((naocc, navir, nocc, nocc, nvir, nvir), dtype=np.float64)
+    x54 += einsum(f.oo, (0, 1), t3[np.ix_(so,so,sO,sv,sv,sV)], (2, 1, 3, 4, 5, 6), (3, 6, 0, 2, 4, 5))
+    t3new += einsum(x54, (0, 1, 2, 3, 4, 5), (2, 3, 0, 5, 4, 1)) * -1.0
+    t3new += einsum(x54, (0, 1, 2, 3, 4, 5), (3, 2, 0, 5, 4, 1))
+    del x54
+    x55 = np.zeros((naocc, navir, nocc, nocc, nvir, nvir), dtype=np.float64)
+    x55 += einsum(f.vv, (0, 1), t3[np.ix_(so,so,sO,sv,sv,sV)], (2, 3, 4, 5, 1, 6), (4, 6, 2, 3, 0, 5))
+    t3new += einsum(x55, (0, 1, 2, 3, 4, 5), (2, 3, 0, 4, 5, 1)) * -1.0
+    t3new += einsum(x55, (0, 1, 2, 3, 4, 5), (2, 3, 0, 5, 4, 1))
+    del x55
+    x56 = np.zeros((naocc, navir, nocc, nocc, nvir, nvir), dtype=np.float64)
+    x56 += einsum(t2[np.ix_(so,so,sv,sV)], (0, 1, 2, 3), v.ovoO, (1, 4, 5, 6), (6, 3, 0, 5, 2, 4))
+    t3new += einsum(x56, (0, 1, 2, 3, 4, 5), (2, 3, 0, 5, 4, 1)) * -1.0
+    t3new += einsum(x56, (0, 1, 2, 3, 4, 5), (2, 3, 0, 4, 5, 1))
+    t3new += einsum(x56, (0, 1, 2, 3, 4, 5), (3, 2, 0, 5, 4, 1))
+    t3new += einsum(x56, (0, 1, 2, 3, 4, 5), (3, 2, 0, 4, 5, 1)) * -1.0
+    del x56
+    x57 = np.zeros((naocc, navir, nocc, nocc, nvir, nvir), dtype=np.float64)
+    x57 += einsum(t2[np.ix_(so,so,sv,sv)], (0, 1, 2, 3), v.oOoV, (4, 5, 1, 6), (5, 6, 0, 4, 2, 3))
+    t3new += einsum(x57, (0, 1, 2, 3, 4, 5), (2, 3, 0, 5, 4, 1))
+    t3new += einsum(x57, (0, 1, 2, 3, 4, 5), (3, 2, 0, 5, 4, 1)) * -1.0
+    del x57
+    x58 = np.zeros((naocc, navir, nocc, nocc, nvir, nvir), dtype=np.float64)
+    x58 += einsum(t2[np.ix_(so,sO,sv,sV)], (0, 1, 2, 3), v.ooov, (4, 5, 0, 6), (1, 3, 4, 5, 2, 6))
+    t3new += einsum(x58, (0, 1, 2, 3, 4, 5), (2, 3, 0, 4, 5, 1)) * -1.0
+    t3new += einsum(x58, (0, 1, 2, 3, 4, 5), (2, 3, 0, 5, 4, 1))
+    del x58
+    x59 = np.zeros((naocc, navir, nocc, nocc, nvir, nvir), dtype=np.float64)
+    x59 += einsum(t2[np.ix_(so,sO,sv,sv)], (0, 1, 2, 3), v.ovvV, (4, 3, 5, 6), (1, 6, 0, 4, 2, 5))
+    t3new += einsum(x59, (0, 1, 2, 3, 4, 5), (2, 3, 0, 4, 5, 1))
+    t3new += einsum(x59, (0, 1, 2, 3, 4, 5), (2, 3, 0, 5, 4, 1)) * -1.0
+    t3new += einsum(x59, (0, 1, 2, 3, 4, 5), (3, 2, 0, 4, 5, 1)) * -1.0
+    t3new += einsum(x59, (0, 1, 2, 3, 4, 5), (3, 2, 0, 5, 4, 1))
+    del x59
+    x60 = np.zeros((naocc, navir, nocc, nocc, nvir, nvir), dtype=np.float64)
+    x60 += einsum(t2[np.ix_(so,sO,sv,sV)], (0, 1, 2, 3), v.ovvv, (4, 2, 5, 6), (1, 3, 0, 4, 5, 6))
+    t3new += einsum(x60, (0, 1, 2, 3, 4, 5), (2, 3, 0, 5, 4, 1))
+    t3new += einsum(x60, (0, 1, 2, 3, 4, 5), (3, 2, 0, 5, 4, 1)) * -1.0
+    del x60
+    x61 = np.zeros((naocc, navir, nocc, nocc, nvir, nvir), dtype=np.float64)
+    x61 += einsum(t2[np.ix_(so,so,sv,sv)], (0, 1, 2, 3), v.vOvV, (3, 4, 5, 6), (4, 6, 0, 1, 2, 5))
+    t3new += einsum(x61, (0, 1, 2, 3, 4, 5), (2, 3, 0, 4, 5, 1))
+    t3new += einsum(x61, (0, 1, 2, 3, 4, 5), (2, 3, 0, 5, 4, 1)) * -1.0
+    del x61
+    x62 = np.zeros((naocc, navir, nocc, nocc, nvir, nvir), dtype=np.float64)
+    x62 += einsum(v.oOoO, (0, 1, 2, 3), t3[np.ix_(so,so,sO,sv,sv,sV)], (4, 2, 3, 5, 6, 7), (1, 7, 4, 0, 5, 6))
+    t3new += einsum(x62, (0, 1, 2, 3, 4, 5), (3, 2, 0, 5, 4, 1)) * 0.5
+    t3new += einsum(x62, (0, 1, 2, 3, 4, 5), (2, 3, 0, 5, 4, 1)) * -0.5
+    del x62
+    x63 = np.zeros((naocc, navir, nocc, nocc, nvir, nvir), dtype=np.float64)
+    x63 += einsum(v.ovov, (0, 1, 2, 3), t3[np.ix_(so,so,sO,sv,sv,sV)], (4, 2, 5, 6, 1, 7), (5, 7, 4, 0, 6, 3))
+    t3new += einsum(x63, (0, 1, 2, 3, 4, 5), (3, 2, 0, 5, 4, 1)) * -1.0
+    t3new += einsum(x63, (0, 1, 2, 3, 4, 5), (3, 2, 0, 4, 5, 1))
+    t3new += einsum(x63, (0, 1, 2, 3, 4, 5), (2, 3, 0, 5, 4, 1))
+    t3new += einsum(x63, (0, 1, 2, 3, 4, 5), (2, 3, 0, 4, 5, 1)) * -1.0
+    del x63
+    x64 = np.zeros((naocc, navir, nocc, nocc, nvir, nvir), dtype=np.float64)
+    x64 += einsum(v.oVoV, (0, 1, 2, 3), t3[np.ix_(so,so,sO,sv,sv,sV)], (4, 2, 5, 6, 7, 1), (5, 3, 4, 0, 6, 7))
+    t3new += einsum(x64, (0, 1, 2, 3, 4, 5), (3, 2, 0, 5, 4, 1)) * -1.0
+    t3new += einsum(x64, (0, 1, 2, 3, 4, 5), (2, 3, 0, 5, 4, 1))
+    del x64
+    x65 = np.zeros((naocc, navir, nocc, nocc, nvir, nvir), dtype=np.float64)
+    x65 += einsum(v.vOvO, (0, 1, 2, 3), t3[np.ix_(so,so,sO,sv,sv,sV)], (4, 5, 1, 6, 2, 7), (3, 7, 4, 5, 6, 0))
+    t3new += einsum(x65, (0, 1, 2, 3, 4, 5), (2, 3, 0, 5, 4, 1))
+    t3new += einsum(x65, (0, 1, 2, 3, 4, 5), (2, 3, 0, 4, 5, 1)) * -1.0
+    del x65
+    x66 = np.zeros((naocc, navir, nocc, nocc, nvir, nvir), dtype=np.float64)
+    x66 += einsum(v.vVvV, (0, 1, 2, 3), t3[np.ix_(so,so,sO,sv,sv,sV)], (4, 5, 6, 7, 2, 3), (6, 1, 4, 5, 7, 0))
+    t3new += einsum(x66, (0, 1, 2, 3, 4, 5), (2, 3, 0, 5, 4, 1)) * -0.5
+    t3new += einsum(x66, (0, 1, 2, 3, 4, 5), (2, 3, 0, 4, 5, 1)) * 0.5
+    del x66
+    x67 = np.zeros((naocc, navir, nocc, nocc, nvir, nvir), dtype=np.float64)
+    x67 += einsum(x0, (0, 1), t3[np.ix_(so,so,sO,sv,sv,sV)], (2, 0, 3, 4, 5, 6), (3, 6, 1, 2, 4, 5))
+    del x0
+    t3new += einsum(x67, (0, 1, 2, 3, 4, 5), (2, 3, 0, 5, 4, 1)) * -1.0
+    t3new += einsum(x67, (0, 1, 2, 3, 4, 5), (3, 2, 0, 5, 4, 1))
+    del x67
+    x68 = np.zeros((naocc, navir, nocc, nocc, nocc, nvir), dtype=np.float64)
+    x68 += einsum(f.ov, (0, 1), t3[np.ix_(so,so,sO,sv,sv,sV)], (2, 3, 4, 5, 1, 6), (4, 6, 0, 2, 3, 5))
+    x69 = np.zeros((naocc, navir, nocc, nocc, nvir, nvir), dtype=np.float64)
+    x69 += einsum(t1[np.ix_(so,sv)], (0, 1), x68, (2, 3, 0, 4, 5, 6), (2, 3, 4, 5, 1, 6))
+    del x68
+    t3new += einsum(x69, (0, 1, 2, 3, 4, 5), (2, 3, 0, 4, 5, 1))
+    t3new += einsum(x69, (0, 1, 2, 3, 4, 5), (2, 3, 0, 5, 4, 1)) * -1.0
+    del x69
+    x70 = np.zeros((navir, navir), dtype=np.float64)
+    x70 += einsum(f.oV, (0, 1), t1[np.ix_(so,sV)], (0, 2), (1, 2))
+    t3new += einsum(x70, (0, 1), t3[np.ix_(so,so,sO,sv,sv,sV)], (2, 3, 4, 5, 6, 0), (2, 3, 4, 5, 6, 1)) * -1.0
+    del x70
+    x71 = np.zeros((naocc, naocc), dtype=np.float64)
+    x71 += einsum(f.vO, (0, 1), t1[np.ix_(sO,sv)], (2, 0), (1, 2))
+    t3new += einsum(x71, (0, 1), t3[np.ix_(so,so,sO,sv,sv,sV)], (2, 3, 0, 4, 5, 6), (2, 3, 1, 4, 5, 6)) * -1.0
+    del x71
+    x72 = np.zeros((naocc, navir, nocc, nocc), dtype=np.float64)
+    x72 += einsum(f.ov, (0, 1), t2[np.ix_(so,sO,sv,sV)], (2, 3, 1, 4), (3, 4, 0, 2))
+    x73 = np.zeros((naocc, navir, nocc, nocc, nvir, nvir), dtype=np.float64)
+    x73 += einsum(t2[np.ix_(so,so,sv,sv)], (0, 1, 2, 3), x72, (4, 5, 1, 6), (4, 5, 6, 0, 2, 3))
+    del x72
+    t3new += einsum(x73, (0, 1, 2, 3, 4, 5), (3, 2, 0, 5, 4, 1))
+    t3new += einsum(x73, (0, 1, 2, 3, 4, 5), (2, 3, 0, 5, 4, 1)) * -1.0
+    del x73
+    x74 = np.zeros((naocc, navir, nocc, nocc, nvir, nvir), dtype=np.float64)
+    x74 += einsum(t2[np.ix_(so,sO,sv,sV)], (0, 1, 2, 3), x15, (0, 4, 5, 6), (1, 3, 4, 5, 2, 6))
+    del x15
+    t3new += einsum(x74, (0, 1, 2, 3, 4, 5), (2, 3, 0, 5, 4, 1)) * -1.0
+    t3new += einsum(x74, (0, 1, 2, 3, 4, 5), (2, 3, 0, 4, 5, 1))
+    del x74
+    x75 = np.zeros((naocc, nocc, nocc, nvir), dtype=np.float64)
+    x75 += einsum(f.ov, (0, 1), t2[np.ix_(so,sO,sv,sv)], (2, 3, 4, 1), (3, 0, 2, 4)) * -1.0
+    x76 = np.zeros((naocc, navir, nocc, nocc, nvir, nvir), dtype=np.float64)
+    x76 += einsum(t2[np.ix_(so,so,sv,sV)], (0, 1, 2, 3), x75, (4, 1, 5, 6), (4, 3, 5, 0, 6, 2)) * -1.0
+    del x75
+    t3new += einsum(x76, (0, 1, 2, 3, 4, 5), (3, 2, 0, 5, 4, 1)) * -1.0
+    t3new += einsum(x76, (0, 1, 2, 3, 4, 5), (3, 2, 0, 4, 5, 1))
+    t3new += einsum(x76, (0, 1, 2, 3, 4, 5), (2, 3, 0, 5, 4, 1))
+    t3new += einsum(x76, (0, 1, 2, 3, 4, 5), (2, 3, 0, 4, 5, 1)) * -1.0
+    del x76
+    x77 = np.zeros((navir, nocc, nocc, nocc), dtype=np.float64)
+    x77 += einsum(f.ov, (0, 1), t2[np.ix_(so,so,sv,sV)], (2, 3, 1, 4), (4, 0, 2, 3)) * -1.0
+    t3new += einsum(t2[np.ix_(so,sO,sv,sv)], (0, 1, 2, 3), x77, (4, 0, 5, 6), (5, 6, 1, 2, 3, 4)) * -1.0
+    del x77
+    x78 = np.zeros((naocc, nocc, nocc, nvir), dtype=np.float64)
+    x78 += einsum(t1[np.ix_(so,sv)], (0, 1), v.oooO, (2, 0, 3, 4), (4, 3, 2, 1)) * -1.0
+    x79 = np.zeros((naocc, navir, nocc, nocc, nvir, nvir), dtype=np.float64)
+    x79 += einsum(t2[np.ix_(so,so,sv,sV)], (0, 1, 2, 3), x78, (4, 5, 1, 6), (4, 3, 0, 5, 6, 2))
+    del x78
+    t3new += einsum(x79, (0, 1, 2, 3, 4, 5), (2, 3, 0, 4, 5, 1)) * -1.0
+    t3new += einsum(x79, (0, 1, 2, 3, 4, 5), (3, 2, 0, 4, 5, 1))
+    t3new += einsum(x79, (0, 1, 2, 3, 4, 5), (2, 3, 0, 5, 4, 1))
+    t3new += einsum(x79, (0, 1, 2, 3, 4, 5), (3, 2, 0, 5, 4, 1)) * -1.0
+    del x79
+    x80 = np.zeros((naocc, nocc, nocc, nvir), dtype=np.float64)
+    x80 += einsum(t1[np.ix_(so,sv)], (0, 1), v.ovvO, (2, 3, 1, 4), (4, 0, 2, 3)) * -1.0
+    x81 = np.zeros((naocc, navir, nocc, nocc, nvir, nvir), dtype=np.float64)
+    x81 += einsum(t2[np.ix_(so,so,sv,sV)], (0, 1, 2, 3), x80, (4, 5, 1, 6), (4, 3, 5, 0, 2, 6)) * -1.0
+    del x80
+    t3new += einsum(x81, (0, 1, 2, 3, 4, 5), (2, 3, 0, 5, 4, 1))
+    t3new += einsum(x81, (0, 1, 2, 3, 4, 5), (2, 3, 0, 4, 5, 1)) * -1.0
+    t3new += einsum(x81, (0, 1, 2, 3, 4, 5), (3, 2, 0, 5, 4, 1)) * -1.0
+    t3new += einsum(x81, (0, 1, 2, 3, 4, 5), (3, 2, 0, 4, 5, 1))
+    del x81
+    x82 = np.zeros((naocc, navir, nocc, nocc, nocc, nvir), dtype=np.float64)
+    x82 += einsum(t2[np.ix_(so,so,sv,sV)], (0, 1, 2, 3), v.ovvO, (4, 5, 2, 6), (6, 3, 0, 1, 4, 5))
+    x83 = np.zeros((naocc, navir, nocc, nocc, nvir, nvir), dtype=np.float64)
+    x83 += einsum(t1[np.ix_(so,sv)], (0, 1), x82, (2, 3, 4, 5, 0, 6), (2, 3, 4, 5, 1, 6))
+    del x82
+    t3new += einsum(x83, (0, 1, 2, 3, 4, 5), (2, 3, 0, 4, 5, 1))
+    t3new += einsum(x83, (0, 1, 2, 3, 4, 5), (2, 3, 0, 5, 4, 1)) * -1.0
+    del x83
+    x84 = np.zeros((naocc, navir, nocc, nocc), dtype=np.float64)
+    x84 += einsum(t1[np.ix_(so,sv)], (0, 1), v.oVvO, (2, 3, 1, 4), (4, 3, 0, 2))
+    x85 = np.zeros((naocc, navir, nocc, nocc, nvir, nvir), dtype=np.float64)
+    x85 += einsum(t2[np.ix_(so,so,sv,sv)], (0, 1, 2, 3), x84, (4, 5, 6, 1), (4, 5, 6, 0, 2, 3))
+    del x84
+    t3new += einsum(x85, (0, 1, 2, 3, 4, 5), (2, 3, 0, 5, 4, 1)) * -1.0
+    t3new += einsum(x85, (0, 1, 2, 3, 4, 5), (3, 2, 0, 5, 4, 1))
+    del x85
+    x86 = np.zeros((naocc, navir, nocc, nocc, nocc, nvir), dtype=np.float64)
+    x86 += einsum(t2[np.ix_(so,so,sv,sv)], (0, 1, 2, 3), v.oVvO, (4, 5, 3, 6), (6, 5, 0, 1, 4, 2))
+    x87 = np.zeros((naocc, navir, nocc, nocc, nvir, nvir), dtype=np.float64)
+    x87 += einsum(t1[np.ix_(so,sv)], (0, 1), x86, (2, 3, 4, 5, 0, 6), (2, 3, 4, 5, 1, 6))
+    del x86
+    t3new += einsum(x87, (0, 1, 2, 3, 4, 5), (2, 3, 0, 4, 5, 1))
+    t3new += einsum(x87, (0, 1, 2, 3, 4, 5), (2, 3, 0, 5, 4, 1)) * -1.0
+    del x87
+    x88 = np.zeros((naocc, navir, nocc, nocc, nocc, nvir), dtype=np.float64)
+    x88 += einsum(t2[np.ix_(so,sO,sv,sV)], (0, 1, 2, 3), v.oooo, (4, 5, 6, 0), (1, 3, 4, 5, 6, 2))
+    x89 = np.zeros((naocc, navir, nocc, nocc, nvir, nvir), dtype=np.float64)
+    x89 += einsum(t1[np.ix_(so,sv)], (0, 1), x88, (2, 3, 4, 5, 0, 6), (2, 3, 4, 5, 1, 6))
+    del x88
+    t3new += einsum(x89, (0, 1, 2, 3, 4, 5), (2, 3, 0, 4, 5, 1))
+    t3new += einsum(x89, (0, 1, 2, 3, 4, 5), (2, 3, 0, 5, 4, 1)) * -1.0
+    del x89
+    x90 = np.zeros((navir, nocc, nocc, nocc), dtype=np.float64)
+    x90 += einsum(t1[np.ix_(so,sv)], (0, 1), v.ovoV, (2, 1, 3, 4), (4, 0, 3, 2)) * -1.0
+    x91 = np.zeros((naocc, navir, nocc, nocc, nvir, nvir), dtype=np.float64)
+    x91 += einsum(t2[np.ix_(so,sO,sv,sv)], (0, 1, 2, 3), x90, (4, 5, 0, 6), (1, 4, 5, 6, 2, 3)) * -1.0
+    del x90
+    t3new += einsum(x91, (0, 1, 2, 3, 4, 5), (2, 3, 0, 5, 4, 1))
+    t3new += einsum(x91, (0, 1, 2, 3, 4, 5), (3, 2, 0, 5, 4, 1)) * -1.0
+    del x91
+    x92 = np.zeros((naocc, navir, nocc, nocc, nvir, nvir), dtype=np.float64)
+    x92 += einsum(t2[np.ix_(so,sO,sv,sV)], (0, 1, 2, 3), x18, (4, 0, 5, 6), (1, 3, 4, 5, 2, 6))
+    del x18
+    t3new += einsum(x92, (0, 1, 2, 3, 4, 5), (2, 3, 0, 4, 5, 1))
+    t3new += einsum(x92, (0, 1, 2, 3, 4, 5), (2, 3, 0, 5, 4, 1)) * -1.0
+    t3new += einsum(x92, (0, 1, 2, 3, 4, 5), (3, 2, 0, 4, 5, 1)) * -1.0
+    t3new += einsum(x92, (0, 1, 2, 3, 4, 5), (3, 2, 0, 5, 4, 1))
+    del x92
+    x93 = np.zeros((naocc, navir, nocc, nocc, nocc, nvir), dtype=np.float64)
+    x93 += einsum(t2[np.ix_(so,sO,sv,sv)], (0, 1, 2, 3), v.ovoV, (4, 3, 5, 6), (1, 6, 0, 5, 4, 2))
+    x94 = np.zeros((naocc, navir, nocc, nocc, nvir, nvir), dtype=np.float64)
+    x94 += einsum(t1[np.ix_(so,sv)], (0, 1), x93, (2, 3, 4, 0, 5, 6), (2, 3, 4, 5, 1, 6))
+    del x93
+    t3new += einsum(x94, (0, 1, 2, 3, 4, 5), (2, 3, 0, 4, 5, 1))
+    t3new += einsum(x94, (0, 1, 2, 3, 4, 5), (3, 2, 0, 4, 5, 1)) * -1.0
+    t3new += einsum(x94, (0, 1, 2, 3, 4, 5), (2, 3, 0, 5, 4, 1)) * -1.0
+    t3new += einsum(x94, (0, 1, 2, 3, 4, 5), (3, 2, 0, 5, 4, 1))
+    del x94
+    x95 = np.zeros((naocc, navir, nocc, nocc, nocc, nvir), dtype=np.float64)
+    x95 += einsum(t2[np.ix_(so,sO,sv,sV)], (0, 1, 2, 3), v.ovov, (4, 5, 6, 2), (1, 3, 0, 4, 6, 5))
+    x96 = np.zeros((naocc, navir, nocc, nocc, nvir, nvir), dtype=np.float64)
+    x96 += einsum(t1[np.ix_(so,sv)], (0, 1), x95, (2, 3, 4, 0, 5, 6), (2, 3, 4, 5, 1, 6))
+    del x95
+    t3new += einsum(x96, (0, 1, 2, 3, 4, 5), (2, 3, 0, 4, 5, 1))
+    t3new += einsum(x96, (0, 1, 2, 3, 4, 5), (3, 2, 0, 4, 5, 1)) * -1.0
+    t3new += einsum(x96, (0, 1, 2, 3, 4, 5), (2, 3, 0, 5, 4, 1)) * -1.0
+    t3new += einsum(x96, (0, 1, 2, 3, 4, 5), (3, 2, 0, 5, 4, 1))
+    del x96
+    x97 = np.zeros((naocc, navir, nocc, nocc), dtype=np.float64)
+    x97 += einsum(t1[np.ix_(so,sV)], (0, 1), v.oooO, (2, 0, 3, 4), (4, 1, 3, 2)) * -1.0
+    x98 = np.zeros((naocc, navir, nocc, nocc, nvir, nvir), dtype=np.float64)
+    x98 += einsum(t2[np.ix_(so,so,sv,sv)], (0, 1, 2, 3), x97, (4, 5, 6, 1), (4, 5, 0, 6, 2, 3)) * -1.0
+    del x97
+    t3new += einsum(x98, (0, 1, 2, 3, 4, 5), (2, 3, 0, 5, 4, 1)) * -1.0
+    t3new += einsum(x98, (0, 1, 2, 3, 4, 5), (3, 2, 0, 5, 4, 1))
+    del x98
+    x99 = np.zeros((naocc, navir, nvir, nvir), dtype=np.float64)
+    x99 += einsum(t1[np.ix_(so,sV)], (0, 1), v.ovvO, (0, 2, 3, 4), (4, 1, 3, 2)) * -1.0
+    x100 = np.zeros((naocc, navir, nocc, nocc, nvir, nvir), dtype=np.float64)
+    x100 += einsum(t2[np.ix_(so,so,sv,sv)], (0, 1, 2, 3), x99, (4, 5, 3, 6), (4, 5, 0, 1, 2, 6))
+    del x99
+    t3new += einsum(x100, (0, 1, 2, 3, 4, 5), (2, 3, 0, 5, 4, 1))
+    t3new += einsum(x100, (0, 1, 2, 3, 4, 5), (2, 3, 0, 4, 5, 1)) * -1.0
+    del x100
+    x101 = np.zeros((navir, nocc, nocc, nocc), dtype=np.float64)
+    x101 += einsum(t1[np.ix_(so,sV)], (0, 1), v.oooo, (2, 3, 4, 0), (1, 2, 3, 4))
+    t3new += einsum(t2[np.ix_(so,sO,sv,sv)], (0, 1, 2, 3), x101, (4, 5, 6, 0), (5, 6, 1, 2, 3, 4)) * -1.0
+    del x101
+    x102 = np.zeros((navir, nocc, nvir, nvir), dtype=np.float64)
+    x102 += einsum(t1[np.ix_(so,sV)], (0, 1), v.ovov, (2, 3, 0, 4), (1, 2, 3, 4))
+    x103 = np.zeros((naocc, navir, nocc, nocc, nvir, nvir), dtype=np.float64)
+    x103 += einsum(t2[np.ix_(so,sO,sv,sv)], (0, 1, 2, 3), x102, (4, 5, 3, 6), (1, 4, 0, 5, 2, 6)) * -1.0
+    del x102
+    t3new += einsum(x103, (0, 1, 2, 3, 4, 5), (2, 3, 0, 4, 5, 1)) * -1.0
+    t3new += einsum(x103, (0, 1, 2, 3, 4, 5), (2, 3, 0, 5, 4, 1))
+    t3new += einsum(x103, (0, 1, 2, 3, 4, 5), (3, 2, 0, 4, 5, 1))
+    t3new += einsum(x103, (0, 1, 2, 3, 4, 5), (3, 2, 0, 5, 4, 1)) * -1.0
+    del x103
+    x104 = np.zeros((navir, nocc, nvir, nvir), dtype=np.float64)
+    x104 += einsum(t1[np.ix_(so,sv)], (0, 1), v.vvvV, (2, 1, 3, 4), (4, 0, 3, 2)) * -1.0
+    x105 = np.zeros((naocc, navir, nocc, nocc, nvir, nvir), dtype=np.float64)
+    x105 += einsum(t2[np.ix_(so,sO,sv,sv)], (0, 1, 2, 3), x104, (4, 5, 6, 3), (1, 4, 5, 0, 2, 6))
+    del x104
+    t3new += einsum(x105, (0, 1, 2, 3, 4, 5), (2, 3, 0, 4, 5, 1)) * -1.0
+    t3new += einsum(x105, (0, 1, 2, 3, 4, 5), (2, 3, 0, 5, 4, 1))
+    t3new += einsum(x105, (0, 1, 2, 3, 4, 5), (3, 2, 0, 4, 5, 1))
+    t3new += einsum(x105, (0, 1, 2, 3, 4, 5), (3, 2, 0, 5, 4, 1)) * -1.0
+    del x105
+    x106 = np.zeros((naocc, navir, nocc, nvir, nvir, nvir), dtype=np.float64)
+    x106 += einsum(t2[np.ix_(so,sO,sv,sV)], (0, 1, 2, 3), v.vvvv, (4, 5, 6, 2), (1, 3, 0, 4, 5, 6))
+    x107 = np.zeros((naocc, navir, nocc, nocc, nvir, nvir), dtype=np.float64)
+    x107 += einsum(t1[np.ix_(so,sv)], (0, 1), x106, (2, 3, 4, 5, 6, 1), (2, 3, 0, 4, 5, 6))
+    del x106
+    t3new += einsum(x107, (0, 1, 2, 3, 4, 5), (2, 3, 0, 5, 4, 1)) * -1.0
+    t3new += einsum(x107, (0, 1, 2, 3, 4, 5), (3, 2, 0, 5, 4, 1))
+    del x107
+    x108 = np.zeros((naocc, navir, nocc, nocc), dtype=np.float64)
+    x108 += einsum(t1[np.ix_(sO,sv)], (0, 1), v.ovoV, (2, 1, 3, 4), (0, 4, 3, 2)) * -1.0
+    x109 = np.zeros((naocc, navir, nocc, nocc, nvir, nvir), dtype=np.float64)
+    x109 += einsum(t2[np.ix_(so,so,sv,sv)], (0, 1, 2, 3), x108, (4, 5, 1, 6), (4, 5, 0, 6, 2, 3))
+    del x108
+    t3new += einsum(x109, (0, 1, 2, 3, 4, 5), (2, 3, 0, 5, 4, 1)) * -1.0
+    t3new += einsum(x109, (0, 1, 2, 3, 4, 5), (3, 2, 0, 5, 4, 1))
+    del x109
+    x110 = np.zeros((naocc, nocc, nocc, nvir), dtype=np.float64)
+    x110 += einsum(t1[np.ix_(sO,sv)], (0, 1), v.ovov, (2, 3, 4, 1), (0, 2, 4, 3))
+    x111 = np.zeros((naocc, navir, nocc, nocc, nvir, nvir), dtype=np.float64)
+    x111 += einsum(t2[np.ix_(so,so,sv,sV)], (0, 1, 2, 3), x110, (4, 1, 5, 6), (4, 3, 0, 5, 2, 6)) * -1.0
+    del x110
+    t3new += einsum(x111, (0, 1, 2, 3, 4, 5), (2, 3, 0, 4, 5, 1)) * -1.0
+    t3new += einsum(x111, (0, 1, 2, 3, 4, 5), (2, 3, 0, 5, 4, 1))
+    t3new += einsum(x111, (0, 1, 2, 3, 4, 5), (3, 2, 0, 4, 5, 1))
+    t3new += einsum(x111, (0, 1, 2, 3, 4, 5), (3, 2, 0, 5, 4, 1)) * -1.0
+    del x111
+    x112 = np.zeros((naocc, navir, nvir, nvir), dtype=np.float64)
+    x112 += einsum(t1[np.ix_(sO,sv)], (0, 1), v.vvvV, (2, 1, 3, 4), (0, 4, 3, 2)) * -1.0
+    x113 = np.zeros((naocc, navir, nocc, nocc, nvir, nvir), dtype=np.float64)
+    x113 += einsum(t2[np.ix_(so,so,sv,sv)], (0, 1, 2, 3), x112, (4, 5, 6, 3), (4, 5, 0, 1, 2, 6)) * -1.0
+    del x112
+    t3new += einsum(x113, (0, 1, 2, 3, 4, 5), (2, 3, 0, 4, 5, 1))
+    t3new += einsum(x113, (0, 1, 2, 3, 4, 5), (2, 3, 0, 5, 4, 1)) * -1.0
+    del x113
+    x114 = np.zeros((naocc, nvir, nvir, nvir), dtype=np.float64)
+    x114 += einsum(t1[np.ix_(sO,sv)], (0, 1), v.vvvv, (2, 3, 4, 1), (0, 2, 3, 4))
+    t3new += einsum(t2[np.ix_(so,so,sv,sV)], (0, 1, 2, 3), x114, (4, 5, 6, 2), (0, 1, 4, 6, 5, 3))
+    del x114
+    x115 = np.zeros((naocc, navir, nocc, nocc, nvir, nvir), dtype=np.float64)
+    x115 += einsum(x21, (0, 1, 2, 3), t3[np.ix_(so,so,sO,sv,sv,sV)], (1, 2, 4, 5, 6, 7), (4, 7, 0, 3, 5, 6))
+    t3new += einsum(x115, (0, 1, 2, 3, 4, 5), (2, 3, 0, 5, 4, 1)) * 0.5
+    t3new += einsum(x115, (0, 1, 2, 3, 4, 5), (3, 2, 0, 5, 4, 1)) * -0.5
+    del x115
+    x116 = np.zeros((naocc, naocc, nocc, nocc), dtype=np.float64)
+    x116 += einsum(t1[np.ix_(so,sv)], (0, 1), v.oOvO, (2, 3, 1, 4), (3, 4, 0, 2))
+    x117 = np.zeros((naocc, navir, nocc, nocc, nvir, nvir), dtype=np.float64)
+    x117 += einsum(x116, (0, 1, 2, 3), t3[np.ix_(so,so,sO,sv,sv,sV)], (4, 3, 0, 5, 6, 7), (1, 7, 2, 4, 5, 6))
+    del x116
+    t3new += einsum(x117, (0, 1, 2, 3, 4, 5), (2, 3, 0, 5, 4, 1)) * 0.5
+    t3new += einsum(x117, (0, 1, 2, 3, 4, 5), (3, 2, 0, 5, 4, 1)) * -0.5
+    del x117
+    x118 = np.zeros((naocc, navir, nocc, nocc, nocc, nvir), dtype=np.float64)
+    x118 += einsum(v.ooov, (0, 1, 2, 3), t3[np.ix_(so,so,sO,sv,sv,sV)], (4, 1, 5, 6, 3, 7), (5, 7, 4, 0, 2, 6))
+    x119 = np.zeros((naocc, navir, nocc, nocc, nvir, nvir), dtype=np.float64)
+    x119 += einsum(t1[np.ix_(so,sv)], (0, 1), x118, (2, 3, 4, 0, 5, 6), (2, 3, 4, 5, 1, 6))
+    del x118
+    t3new += einsum(x119, (0, 1, 2, 3, 4, 5), (3, 2, 0, 4, 5, 1)) * -1.0
+    t3new += einsum(x119, (0, 1, 2, 3, 4, 5), (2, 3, 0, 4, 5, 1))
+    t3new += einsum(x119, (0, 1, 2, 3, 4, 5), (3, 2, 0, 5, 4, 1))
+    t3new += einsum(x119, (0, 1, 2, 3, 4, 5), (2, 3, 0, 5, 4, 1)) * -1.0
+    del x119
+    x120 = np.zeros((naocc, navir, nocc, nocc, nvir, nvir), dtype=np.float64)
+    x120 += einsum(x1, (0, 1), t3[np.ix_(so,so,sO,sv,sv,sV)], (2, 0, 3, 4, 5, 6), (3, 6, 2, 1, 4, 5)) * -1.0
+    del x1
+    t3new += einsum(x120, (0, 1, 2, 3, 4, 5), (3, 2, 0, 5, 4, 1))
+    t3new += einsum(x120, (0, 1, 2, 3, 4, 5), (2, 3, 0, 5, 4, 1)) * -1.0
+    del x120
+    x121 = np.zeros((naocc, navir, nocc, nocc, nocc, nvir), dtype=np.float64)
+    x121 += einsum(v.oOvO, (0, 1, 2, 3), t3[np.ix_(so,so,sO,sv,sv,sV)], (4, 5, 1, 6, 2, 7), (3, 7, 4, 5, 0, 6))
+    x122 = np.zeros((naocc, navir, nocc, nocc, nvir, nvir), dtype=np.float64)
+    x122 += einsum(t1[np.ix_(so,sv)], (0, 1), x121, (2, 3, 4, 5, 0, 6), (2, 3, 4, 5, 1, 6))
+    del x121
+    t3new += einsum(x122, (0, 1, 2, 3, 4, 5), (2, 3, 0, 4, 5, 1)) * -1.0
+    t3new += einsum(x122, (0, 1, 2, 3, 4, 5), (2, 3, 0, 5, 4, 1))
+    del x122
+    x123 = np.zeros((naocc, naocc), dtype=np.float64)
+    x123 += einsum(t1[np.ix_(so,sv)], (0, 1), v.oOvO, (0, 2, 1, 3), (2, 3))
+    t3new += einsum(x123, (0, 1), t3[np.ix_(so,so,sO,sv,sv,sV)], (2, 3, 0, 4, 5, 6), (2, 3, 1, 4, 5, 6)) * -1.0
+    del x123
+    x124 = np.zeros((naocc, navir, nocc, nocc, nvir, nvir), dtype=np.float64)
+    x124 += einsum(x26, (0, 1, 2, 3), t3[np.ix_(so,so,sO,sv,sv,sV)], (4, 1, 5, 6, 3, 7), (5, 7, 0, 4, 6, 2)) * -1.0
+    del x26
+    t3new += einsum(x124, (0, 1, 2, 3, 4, 5), (2, 3, 0, 5, 4, 1)) * -1.0
+    t3new += einsum(x124, (0, 1, 2, 3, 4, 5), (2, 3, 0, 4, 5, 1))
+    t3new += einsum(x124, (0, 1, 2, 3, 4, 5), (3, 2, 0, 5, 4, 1))
+    t3new += einsum(x124, (0, 1, 2, 3, 4, 5), (3, 2, 0, 4, 5, 1)) * -1.0
+    del x124
+    x125 = np.zeros((naocc, navir, nocc, nocc, nocc, nvir), dtype=np.float64)
+    x125 += einsum(v.ovvv, (0, 1, 2, 3), t3[np.ix_(so,so,sO,sv,sv,sV)], (4, 5, 6, 2, 3, 7), (6, 7, 4, 5, 0, 1))
+    x126 = np.zeros((naocc, navir, nocc, nocc, nvir, nvir), dtype=np.float64)
+    x126 += einsum(t1[np.ix_(so,sv)], (0, 1), x125, (2, 3, 4, 5, 0, 6), (2, 3, 4, 5, 1, 6))
+    del x125
+    t3new += einsum(x126, (0, 1, 2, 3, 4, 5), (2, 3, 0, 4, 5, 1)) * -0.5
+    t3new += einsum(x126, (0, 1, 2, 3, 4, 5), (2, 3, 0, 5, 4, 1)) * 0.5
+    del x126
+    x127 = np.zeros((naocc, navir, nocc, nocc, nvir, nvir), dtype=np.float64)
+    x127 += einsum(x2, (0, 1), t3[np.ix_(so,so,sO,sv,sv,sV)], (2, 3, 4, 5, 1, 6), (4, 6, 2, 3, 5, 0)) * -1.0
+    del x2
+    t3new += einsum(x127, (0, 1, 2, 3, 4, 5), (2, 3, 0, 5, 4, 1)) * -1.0
+    t3new += einsum(x127, (0, 1, 2, 3, 4, 5), (2, 3, 0, 4, 5, 1))
+    del x127
+    x128 = np.zeros((navir, navir, nocc, nocc), dtype=np.float64)
+    x128 += einsum(t1[np.ix_(so,sv)], (0, 1), v.oVvV, (2, 3, 1, 4), (3, 4, 0, 2))
+    x129 = np.zeros((naocc, navir, nocc, nocc, nvir, nvir), dtype=np.float64)
+    x129 += einsum(x128, (0, 1, 2, 3), t3[np.ix_(so,so,sO,sv,sv,sV)], (4, 3, 5, 6, 7, 1), (5, 0, 2, 4, 6, 7))
+    del x128
+    t3new += einsum(x129, (0, 1, 2, 3, 4, 5), (2, 3, 0, 5, 4, 1)) * -1.0
+    t3new += einsum(x129, (0, 1, 2, 3, 4, 5), (3, 2, 0, 5, 4, 1))
+    del x129
+    x130 = np.zeros((naocc, navir, nocc, nocc, nocc, nvir), dtype=np.float64)
+    x130 += einsum(v.oVvV, (0, 1, 2, 3), t3[np.ix_(so,so,sO,sv,sv,sV)], (4, 5, 6, 7, 2, 3), (6, 1, 4, 5, 0, 7))
+    x131 = np.zeros((naocc, navir, nocc, nocc, nvir, nvir), dtype=np.float64)
+    x131 += einsum(t1[np.ix_(so,sv)], (0, 1), x130, (2, 3, 4, 5, 0, 6), (2, 3, 4, 5, 1, 6))
+    del x130
+    t3new += einsum(x131, (0, 1, 2, 3, 4, 5), (2, 3, 0, 4, 5, 1)) * 0.5
+    t3new += einsum(x131, (0, 1, 2, 3, 4, 5), (2, 3, 0, 5, 4, 1)) * -0.5
+    del x131
+    x132 = np.zeros((navir, navir), dtype=np.float64)
+    x132 += einsum(t1[np.ix_(so,sv)], (0, 1), v.oVvV, (0, 2, 1, 3), (2, 3))
+    t3new += einsum(x132, (0, 1), t3[np.ix_(so,so,sO,sv,sv,sV)], (2, 3, 4, 5, 6, 1), (2, 3, 4, 5, 6, 0))
+    del x132
+    x133 = np.zeros((navir, navir, nocc, nocc), dtype=np.float64)
+    x133 += einsum(t1[np.ix_(so,sV)], (0, 1), v.oooV, (2, 0, 3, 4), (1, 4, 3, 2)) * -1.0
+    x134 = np.zeros((naocc, navir, nocc, nocc, nvir, nvir), dtype=np.float64)
+    x134 += einsum(x133, (0, 1, 2, 3), t3[np.ix_(so,so,sO,sv,sv,sV)], (4, 3, 5, 6, 7, 1), (5, 0, 4, 2, 6, 7)) * -1.0
+    del x133
+    t3new += einsum(x134, (0, 1, 2, 3, 4, 5), (3, 2, 0, 5, 4, 1))
+    t3new += einsum(x134, (0, 1, 2, 3, 4, 5), (2, 3, 0, 5, 4, 1)) * -1.0
+    del x134
+    x135 = np.zeros((naocc, naocc, navir, navir), dtype=np.float64)
+    x135 += einsum(t1[np.ix_(so,sV)], (0, 1), v.oOOV, (0, 2, 3, 4), (3, 2, 1, 4)) * -1.0
+    t3new += einsum(x135, (0, 1, 2, 3), t3[np.ix_(so,so,sO,sv,sv,sV)], (4, 5, 1, 6, 7, 3), (4, 5, 0, 6, 7, 2))
+    del x135
+    x136 = np.zeros((navir, navir, nvir, nvir), dtype=np.float64)
+    x136 += einsum(t1[np.ix_(so,sV)], (0, 1), v.ovvV, (0, 2, 3, 4), (1, 4, 3, 2)) * -1.0
+    x137 = np.zeros((naocc, navir, nocc, nocc, nvir, nvir), dtype=np.float64)
+    x137 += einsum(x136, (0, 1, 2, 3), t3[np.ix_(so,so,sO,sv,sv,sV)], (4, 5, 6, 7, 2, 1), (6, 0, 4, 5, 7, 3))
+    del x136
+    t3new += einsum(x137, (0, 1, 2, 3, 4, 5), (2, 3, 0, 5, 4, 1)) * 0.5
+    t3new += einsum(x137, (0, 1, 2, 3, 4, 5), (2, 3, 0, 4, 5, 1)) * -0.5
+    del x137
+    x138 = np.zeros((naocc, naocc, nocc, nocc), dtype=np.float64)
+    x138 += einsum(t1[np.ix_(sO,sv)], (0, 1), v.ovoO, (2, 1, 3, 4), (0, 4, 3, 2)) * -1.0
+    x139 = np.zeros((naocc, navir, nocc, nocc, nvir, nvir), dtype=np.float64)
+    x139 += einsum(x138, (0, 1, 2, 3), t3[np.ix_(so,so,sO,sv,sv,sV)], (4, 2, 1, 5, 6, 7), (0, 7, 4, 3, 5, 6))
+    del x138
+    t3new += einsum(x139, (0, 1, 2, 3, 4, 5), (3, 2, 0, 5, 4, 1)) * -0.5
+    t3new += einsum(x139, (0, 1, 2, 3, 4, 5), (2, 3, 0, 5, 4, 1)) * 0.5
+    del x139
+    x140 = np.zeros((naocc, naocc, nvir, nvir), dtype=np.float64)
+    x140 += einsum(t1[np.ix_(sO,sv)], (0, 1), v.vvvO, (2, 1, 3, 4), (0, 4, 3, 2)) * -1.0
+    x141 = np.zeros((naocc, navir, nocc, nocc, nvir, nvir), dtype=np.float64)
+    x141 += einsum(x140, (0, 1, 2, 3), t3[np.ix_(so,so,sO,sv,sv,sV)], (4, 5, 1, 6, 3, 7), (0, 7, 4, 5, 6, 2)) * -1.0
+    del x140
+    t3new += einsum(x141, (0, 1, 2, 3, 4, 5), (2, 3, 0, 5, 4, 1))
+    t3new += einsum(x141, (0, 1, 2, 3, 4, 5), (2, 3, 0, 4, 5, 1)) * -1.0
+    del x141
+    x142 = np.zeros((naocc, naocc, navir, navir), dtype=np.float64)
+    x142 += einsum(t1[np.ix_(sO,sv)], (0, 1), v.vVOV, (1, 2, 3, 4), (0, 3, 4, 2)) * -1.0
+    t3new += einsum(x142, (0, 1, 2, 3), t3[np.ix_(so,so,sO,sv,sv,sV)], (4, 5, 1, 6, 7, 3), (4, 5, 0, 6, 7, 2))
+    del x142
+    x143 = np.zeros((naocc, nocc, nocc, nvir), dtype=np.float64)
+    x143 += einsum(t2[np.ix_(so,so,sv,sv)], (0, 1, 2, 3), v.oovO, (4, 1, 3, 5), (5, 0, 4, 2)) * -1.0
+    x144 = np.zeros((naocc, navir, nocc, nocc, nvir, nvir), dtype=np.float64)
+    x144 += einsum(t2[np.ix_(so,so,sv,sV)], (0, 1, 2, 3), x143, (4, 5, 1, 6), (4, 3, 0, 5, 2, 6)) * -1.0
+    del x143
+    t3new += einsum(x144, (0, 1, 2, 3, 4, 5), (3, 2, 0, 5, 4, 1))
+    t3new += einsum(x144, (0, 1, 2, 3, 4, 5), (3, 2, 0, 4, 5, 1)) * -1.0
+    t3new += einsum(x144, (0, 1, 2, 3, 4, 5), (2, 3, 0, 5, 4, 1)) * -1.0
+    t3new += einsum(x144, (0, 1, 2, 3, 4, 5), (2, 3, 0, 4, 5, 1))
+    del x144
+    x145 = np.zeros((naocc, navir, nocc, nocc), dtype=np.float64)
+    x145 += einsum(t2[np.ix_(so,so,sv,sV)], (0, 1, 2, 3), v.oovO, (4, 1, 2, 5), (5, 3, 0, 4))
+    x146 = np.zeros((naocc, navir, nocc, nocc, nvir, nvir), dtype=np.float64)
+    x146 += einsum(t2[np.ix_(so,so,sv,sv)], (0, 1, 2, 3), x145, (4, 5, 6, 1), (4, 5, 6, 0, 2, 3)) * -1.0
+    del x145
+    t3new += einsum(x146, (0, 1, 2, 3, 4, 5), (3, 2, 0, 5, 4, 1))
+    t3new += einsum(x146, (0, 1, 2, 3, 4, 5), (2, 3, 0, 5, 4, 1)) * -1.0
+    del x146
+    x147 = np.zeros((naocc, navir, nvir, nvir), dtype=np.float64)
+    x147 += einsum(t2[np.ix_(so,so,sv,sV)], (0, 1, 2, 3), v.oovO, (0, 1, 4, 5), (5, 3, 2, 4))
+    x148 = np.zeros((naocc, navir, nocc, nocc, nvir, nvir), dtype=np.float64)
+    x148 += einsum(t2[np.ix_(so,so,sv,sv)], (0, 1, 2, 3), x147, (4, 5, 6, 3), (4, 5, 0, 1, 6, 2))
+    del x147
+    t3new += einsum(x148, (0, 1, 2, 3, 4, 5), (2, 3, 0, 5, 4, 1)) * 0.5
+    t3new += einsum(x148, (0, 1, 2, 3, 4, 5), (2, 3, 0, 4, 5, 1)) * -0.5
+    del x148
+    x149 = np.zeros((naocc, nvir, nvir, nvir), dtype=np.float64)
+    x149 += einsum(t2[np.ix_(so,so,sv,sv)], (0, 1, 2, 3), v.oovO, (0, 1, 4, 5), (5, 2, 3, 4)) * -1.0
+    t3new += einsum(t2[np.ix_(so,so,sv,sV)], (0, 1, 2, 3), x149, (4, 5, 6, 2), (0, 1, 4, 6, 5, 3)) * -0.5
+    del x149
+    x150 = np.zeros((naocc, navir, nocc, nocc, nvir, nvir), dtype=np.float64)
+    x150 += einsum(t2[np.ix_(so,sO,sv,sV)], (0, 1, 2, 3), x23, (4, 0, 5, 6), (1, 3, 4, 5, 2, 6))
+    del x23
+    t3new += einsum(x150, (0, 1, 2, 3, 4, 5), (2, 3, 0, 5, 4, 1)) * -1.0
+    t3new += einsum(x150, (0, 1, 2, 3, 4, 5), (2, 3, 0, 4, 5, 1))
+    t3new += einsum(x150, (0, 1, 2, 3, 4, 5), (3, 2, 0, 5, 4, 1))
+    t3new += einsum(x150, (0, 1, 2, 3, 4, 5), (3, 2, 0, 4, 5, 1)) * -1.0
+    del x150
+    x151 = np.zeros((naocc, navir, nocc, nocc), dtype=np.float64)
+    x151 += einsum(t2[np.ix_(so,sO,sv,sV)], (0, 1, 2, 3), v.ooov, (4, 0, 5, 2), (1, 3, 4, 5))
+    x152 = np.zeros((naocc, navir, nocc, nocc, nvir, nvir), dtype=np.float64)
+    x152 += einsum(t2[np.ix_(so,so,sv,sv)], (0, 1, 2, 3), x151, (4, 5, 1, 6), (4, 5, 0, 6, 2, 3)) * -1.0
+    del x151
+    t3new += einsum(x152, (0, 1, 2, 3, 4, 5), (2, 3, 0, 5, 4, 1)) * -1.0
+    t3new += einsum(x152, (0, 1, 2, 3, 4, 5), (3, 2, 0, 5, 4, 1))
+    del x152
+    x153 = np.zeros((naocc, navir, nocc, nocc, nocc, nocc), dtype=np.float64)
+    x153 += einsum(t2[np.ix_(so,sO,sv,sV)], (0, 1, 2, 3), v.ooov, (4, 5, 6, 2), (1, 3, 0, 4, 5, 6))
+    x154 = np.zeros((naocc, navir, nocc, nocc, nvir, nvir), dtype=np.float64)
+    x154 += einsum(t2[np.ix_(so,so,sv,sv)], (0, 1, 2, 3), x153, (4, 5, 6, 1, 0, 7), (4, 5, 6, 7, 2, 3)) * -1.0
+    t3new += einsum(x154, (0, 1, 2, 3, 4, 5), (2, 3, 0, 5, 4, 1)) * 0.5
+    t3new += einsum(x154, (0, 1, 2, 3, 4, 5), (3, 2, 0, 5, 4, 1)) * -0.5
+    del x154
+    x155 = np.zeros((naocc, nocc, nocc, nvir), dtype=np.float64)
+    x155 += einsum(t2[np.ix_(so,sO,sv,sv)], (0, 1, 2, 3), v.ooov, (4, 0, 5, 3), (1, 4, 5, 2)) * -1.0
+    x156 = np.zeros((naocc, navir, nocc, nocc, nvir, nvir), dtype=np.float64)
+    x156 += einsum(t2[np.ix_(so,so,sv,sV)], (0, 1, 2, 3), x155, (4, 1, 5, 6), (4, 3, 0, 5, 6, 2))
+    del x155
+    t3new += einsum(x156, (0, 1, 2, 3, 4, 5), (2, 3, 0, 5, 4, 1))
+    t3new += einsum(x156, (0, 1, 2, 3, 4, 5), (2, 3, 0, 4, 5, 1)) * -1.0
+    t3new += einsum(x156, (0, 1, 2, 3, 4, 5), (3, 2, 0, 5, 4, 1)) * -1.0
+    t3new += einsum(x156, (0, 1, 2, 3, 4, 5), (3, 2, 0, 4, 5, 1))
+    del x156
+    x157 = np.zeros((navir, nocc, nocc, nocc), dtype=np.float64)
+    x157 += einsum(t2[np.ix_(so,so,sv,sV)], (0, 1, 2, 3), v.ooov, (4, 1, 5, 2), (3, 0, 4, 5)) * -1.0
+    x158 = np.zeros((naocc, navir, nocc, nocc, nvir, nvir), dtype=np.float64)
+    x158 += einsum(t2[np.ix_(so,sO,sv,sv)], (0, 1, 2, 3), x157, (4, 5, 0, 6), (1, 4, 5, 6, 2, 3)) * -1.0
+    del x157
+    t3new += einsum(x158, (0, 1, 2, 3, 4, 5), (2, 3, 0, 5, 4, 1)) * -1.0
+    t3new += einsum(x158, (0, 1, 2, 3, 4, 5), (3, 2, 0, 5, 4, 1))
+    del x158
+    x159 = np.zeros((navir, nocc, nvir, nvir), dtype=np.float64)
+    x159 += einsum(t2[np.ix_(so,so,sv,sV)], (0, 1, 2, 3), v.ooov, (0, 1, 4, 5), (3, 4, 2, 5)) * -1.0
+    x160 = np.zeros((naocc, navir, nocc, nocc, nvir, nvir), dtype=np.float64)
+    x160 += einsum(t2[np.ix_(so,sO,sv,sv)], (0, 1, 2, 3), x159, (4, 5, 6, 3), (1, 4, 0, 5, 2, 6)) * -1.0
+    del x159
+    t3new += einsum(x160, (0, 1, 2, 3, 4, 5), (2, 3, 0, 5, 4, 1)) * -0.5
+    t3new += einsum(x160, (0, 1, 2, 3, 4, 5), (2, 3, 0, 4, 5, 1)) * 0.5
+    t3new += einsum(x160, (0, 1, 2, 3, 4, 5), (3, 2, 0, 5, 4, 1)) * 0.5
+    t3new += einsum(x160, (0, 1, 2, 3, 4, 5), (3, 2, 0, 4, 5, 1)) * -0.5
+    del x160
+    x161 = np.zeros((naocc, navir, nocc, nocc, nvir, nvir), dtype=np.float64)
+    x161 += einsum(t2[np.ix_(so,sO,sv,sV)], (0, 1, 2, 3), v.ovvv, (4, 5, 6, 2), (1, 3, 0, 4, 5, 6))
+    x162 = np.zeros((naocc, navir, nocc, nocc, nvir, nvir), dtype=np.float64)
+    x162 += einsum(t2[np.ix_(so,so,sv,sv)], (0, 1, 2, 3), x161, (4, 5, 6, 1, 7, 3), (4, 5, 6, 0, 2, 7)) * -1.0
+    t3new += einsum(x162, (0, 1, 2, 3, 4, 5), (3, 2, 0, 5, 4, 1))
+    t3new += einsum(x162, (0, 1, 2, 3, 4, 5), (3, 2, 0, 4, 5, 1)) * -1.0
+    t3new += einsum(x162, (0, 1, 2, 3, 4, 5), (2, 3, 0, 5, 4, 1)) * -1.0
+    t3new += einsum(x162, (0, 1, 2, 3, 4, 5), (2, 3, 0, 4, 5, 1))
+    del x162
+    x163 = np.zeros((naocc, navir, nvir, nvir), dtype=np.float64)
+    x163 += einsum(t2[np.ix_(so,sO,sv,sV)], (0, 1, 2, 3), v.ovvv, (0, 4, 5, 2), (1, 3, 4, 5))
+    x164 = np.zeros((naocc, navir, nocc, nocc, nvir, nvir), dtype=np.float64)
+    x164 += einsum(t2[np.ix_(so,so,sv,sv)], (0, 1, 2, 3), x163, (4, 5, 6, 3), (4, 5, 0, 1, 2, 6)) * -1.0
+    del x163
+    t3new += einsum(x164, (0, 1, 2, 3, 4, 5), (2, 3, 0, 5, 4, 1)) * -1.0
+    t3new += einsum(x164, (0, 1, 2, 3, 4, 5), (2, 3, 0, 4, 5, 1))
+    del x164
+    x165 = np.zeros((naocc, navir, nocc, nocc, nvir, nvir), dtype=np.float64)
+    x165 += einsum(t2[np.ix_(so,sO,sv,sV)], (0, 1, 2, 3), x28, (4, 5, 0, 6), (1, 3, 4, 5, 2, 6))
+    del x28
+    t3new += einsum(x165, (0, 1, 2, 3, 4, 5), (2, 3, 0, 5, 4, 1)) * 0.5
+    t3new += einsum(x165, (0, 1, 2, 3, 4, 5), (2, 3, 0, 4, 5, 1)) * -0.5
+    del x165
+    x166 = np.zeros((naocc, nocc, nocc, nvir), dtype=np.float64)
+    x166 += einsum(t2[np.ix_(so,sO,sv,sv)], (0, 1, 2, 3), v.ovvv, (4, 5, 2, 3), (1, 0, 4, 5)) * -1.0
+    x167 = np.zeros((naocc, navir, nocc, nocc, nvir, nvir), dtype=np.float64)
+    x167 += einsum(t2[np.ix_(so,so,sv,sV)], (0, 1, 2, 3), x166, (4, 5, 1, 6), (4, 3, 5, 0, 2, 6)) * -1.0
+    del x166
+    t3new += einsum(x167, (0, 1, 2, 3, 4, 5), (3, 2, 0, 5, 4, 1)) * -0.5
+    t3new += einsum(x167, (0, 1, 2, 3, 4, 5), (3, 2, 0, 4, 5, 1)) * 0.5
+    t3new += einsum(x167, (0, 1, 2, 3, 4, 5), (2, 3, 0, 5, 4, 1)) * 0.5
+    t3new += einsum(x167, (0, 1, 2, 3, 4, 5), (2, 3, 0, 4, 5, 1)) * -0.5
+    del x167
+    x168 = np.zeros((navir, nocc, nvir, nvir), dtype=np.float64)
+    x168 += einsum(t2[np.ix_(so,so,sv,sV)], (0, 1, 2, 3), v.ovvv, (1, 4, 5, 2), (3, 0, 4, 5)) * -1.0
+    x169 = np.zeros((naocc, navir, nocc, nocc, nvir, nvir), dtype=np.float64)
+    x169 += einsum(t2[np.ix_(so,sO,sv,sv)], (0, 1, 2, 3), x168, (4, 5, 6, 3), (1, 4, 0, 5, 2, 6)) * -1.0
+    del x168
+    t3new += einsum(x169, (0, 1, 2, 3, 4, 5), (3, 2, 0, 5, 4, 1)) * -1.0
+    t3new += einsum(x169, (0, 1, 2, 3, 4, 5), (3, 2, 0, 4, 5, 1))
+    t3new += einsum(x169, (0, 1, 2, 3, 4, 5), (2, 3, 0, 5, 4, 1))
+    t3new += einsum(x169, (0, 1, 2, 3, 4, 5), (2, 3, 0, 4, 5, 1)) * -1.0
+    del x169
+    x170 = np.zeros((naocc, nvir, nvir, nvir), dtype=np.float64)
+    x170 += einsum(t2[np.ix_(so,sO,sv,sv)], (0, 1, 2, 3), v.ovvv, (0, 4, 5, 3), (1, 2, 4, 5)) * -1.0
+    x171 = np.zeros((naocc, navir, nocc, nocc, nvir, nvir), dtype=np.float64)
+    x171 += einsum(t2[np.ix_(so,so,sv,sV)], (0, 1, 2, 3), x170, (4, 5, 6, 2), (4, 3, 0, 1, 5, 6))
+    del x170
+    t3new += einsum(x171, (0, 1, 2, 3, 4, 5), (2, 3, 0, 5, 4, 1))
+    t3new += einsum(x171, (0, 1, 2, 3, 4, 5), (2, 3, 0, 4, 5, 1)) * -1.0
+    del x171
+    x172 = np.zeros((navir, nocc, nvir, nvir), dtype=np.float64)
+    x172 += einsum(t2[np.ix_(so,so,sv,sv)], (0, 1, 2, 3), v.oVvv, (1, 4, 5, 3), (4, 0, 2, 5)) * -1.0
+    x173 = np.zeros((naocc, navir, nocc, nocc, nvir, nvir), dtype=np.float64)
+    x173 += einsum(t2[np.ix_(so,sO,sv,sv)], (0, 1, 2, 3), x172, (4, 5, 6, 3), (1, 4, 0, 5, 2, 6)) * -1.0
+    del x172
+    t3new += einsum(x173, (0, 1, 2, 3, 4, 5), (3, 2, 0, 5, 4, 1)) * -1.0
+    t3new += einsum(x173, (0, 1, 2, 3, 4, 5), (3, 2, 0, 4, 5, 1))
+    t3new += einsum(x173, (0, 1, 2, 3, 4, 5), (2, 3, 0, 5, 4, 1))
+    t3new += einsum(x173, (0, 1, 2, 3, 4, 5), (2, 3, 0, 4, 5, 1)) * -1.0
+    del x173
+    x174 = np.zeros((naocc, navir, nocc, nocc), dtype=np.float64)
+    x174 += einsum(t2[np.ix_(so,sO,sv,sv)], (0, 1, 2, 3), v.oVvv, (4, 5, 2, 3), (1, 5, 0, 4))
+    x175 = np.zeros((naocc, navir, nocc, nocc, nvir, nvir), dtype=np.float64)
+    x175 += einsum(t2[np.ix_(so,so,sv,sv)], (0, 1, 2, 3), x174, (4, 5, 6, 1), (4, 5, 6, 0, 2, 3))
+    del x174
+    t3new += einsum(x175, (0, 1, 2, 3, 4, 5), (3, 2, 0, 5, 4, 1)) * 0.5
+    t3new += einsum(x175, (0, 1, 2, 3, 4, 5), (2, 3, 0, 5, 4, 1)) * -0.5
+    del x175
+    x176 = np.zeros((naocc, navir, nvir, nvir), dtype=np.float64)
+    x176 += einsum(t2[np.ix_(so,sO,sv,sv)], (0, 1, 2, 3), v.oVvv, (0, 4, 5, 3), (1, 4, 2, 5))
+    x177 = np.zeros((naocc, navir, nocc, nocc, nvir, nvir), dtype=np.float64)
+    x177 += einsum(t2[np.ix_(so,so,sv,sv)], (0, 1, 2, 3), x176, (4, 5, 6, 3), (4, 5, 0, 1, 6, 2)) * -1.0
+    del x176
+    t3new += einsum(x177, (0, 1, 2, 3, 4, 5), (2, 3, 0, 5, 4, 1))
+    t3new += einsum(x177, (0, 1, 2, 3, 4, 5), (2, 3, 0, 4, 5, 1)) * -1.0
+    del x177
+    x178 = np.zeros((navir, nocc, nocc, nocc), dtype=np.float64)
+    x178 += einsum(t2[np.ix_(so,so,sv,sv)], (0, 1, 2, 3), v.oVvv, (4, 5, 2, 3), (5, 0, 1, 4)) * -1.0
+    t3new += einsum(t2[np.ix_(so,sO,sv,sv)], (0, 1, 2, 3), x178, (4, 5, 6, 0), (5, 6, 1, 2, 3, 4)) * -0.5
+    del x178
+    x179 = np.zeros((naocc, navir, nvir, nvir), dtype=np.float64)
+    x179 += einsum(v.oovv, (0, 1, 2, 3), t3[np.ix_(so,so,sO,sv,sv,sV)], (0, 1, 4, 5, 3, 6), (4, 6, 5, 2))
+    x180 = np.zeros((naocc, navir, nocc, nocc, nvir, nvir), dtype=np.float64)
+    x180 += einsum(t2[np.ix_(so,so,sv,sv)], (0, 1, 2, 3), x179, (4, 5, 6, 3), (4, 5, 0, 1, 2, 6))
+    del x179
+    t3new += einsum(x180, (0, 1, 2, 3, 4, 5), (2, 3, 0, 4, 5, 1)) * -0.5
+    t3new += einsum(x180, (0, 1, 2, 3, 4, 5), (2, 3, 0, 5, 4, 1)) * 0.5
+    del x180
+    x181 = np.zeros((naocc, navir, nocc, nocc), dtype=np.float64)
+    x181 += einsum(v.oovv, (0, 1, 2, 3), t3[np.ix_(so,so,sO,sv,sv,sV)], (4, 1, 5, 2, 3, 6), (5, 6, 4, 0))
+    x182 = np.zeros((naocc, navir, nocc, nocc, nvir, nvir), dtype=np.float64)
+    x182 += einsum(t2[np.ix_(so,so,sv,sv)], (0, 1, 2, 3), x181, (4, 5, 6, 1), (4, 5, 0, 6, 2, 3))
+    del x181
+    t3new += einsum(x182, (0, 1, 2, 3, 4, 5), (2, 3, 0, 5, 4, 1)) * 0.5
+    t3new += einsum(x182, (0, 1, 2, 3, 4, 5), (3, 2, 0, 5, 4, 1)) * -0.5
+    del x182
+    x183 = np.zeros((naocc, navir, nocc, nocc, nvir, nvir), dtype=np.float64)
+    x183 += einsum(v.oovv, (0, 1, 2, 3), t3[np.ix_(so,so,sO,sv,sv,sV)], (4, 1, 5, 6, 3, 7), (5, 7, 4, 0, 6, 2))
+    x184 = np.zeros((naocc, navir, nocc, nocc, nvir, nvir), dtype=np.float64)
+    x184 += einsum(t2[np.ix_(so,so,sv,sv)], (0, 1, 2, 3), x183, (4, 5, 6, 1, 7, 3), (4, 5, 0, 6, 2, 7))
+    del x183
+    t3new += einsum(x184, (0, 1, 2, 3, 4, 5), (2, 3, 0, 4, 5, 1))
+    t3new += einsum(x184, (0, 1, 2, 3, 4, 5), (2, 3, 0, 5, 4, 1)) * -1.0
+    t3new += einsum(x184, (0, 1, 2, 3, 4, 5), (3, 2, 0, 4, 5, 1)) * -1.0
+    t3new += einsum(x184, (0, 1, 2, 3, 4, 5), (3, 2, 0, 5, 4, 1))
+    del x184
+    x185 = np.zeros((naocc, navir, nocc, nocc, nvir, nvir), dtype=np.float64)
+    x185 += einsum(x4, (0, 1), t3[np.ix_(so,so,sO,sv,sv,sV)], (2, 1, 3, 4, 5, 6), (3, 6, 0, 2, 4, 5)) * -1.0
+    del x4
+    t3new += einsum(x185, (0, 1, 2, 3, 4, 5), (2, 3, 0, 5, 4, 1)) * 0.5
+    t3new += einsum(x185, (0, 1, 2, 3, 4, 5), (3, 2, 0, 5, 4, 1)) * -0.5
+    del x185
+    x186 = np.zeros((naocc, navir, nocc, nocc, nocc, nocc), dtype=np.float64)
+    x186 += einsum(v.oovv, (0, 1, 2, 3), t3[np.ix_(so,so,sO,sv,sv,sV)], (4, 5, 6, 2, 3, 7), (6, 7, 4, 5, 0, 1))
+    t3new += einsum(t2[np.ix_(so,so,sv,sv)], (0, 1, 2, 3), x186, (4, 5, 6, 7, 1, 0), (6, 7, 4, 2, 3, 5)) * -0.25
+    x187 = np.zeros((naocc, navir, nocc, nocc, nvir, nvir), dtype=np.float64)
+    x187 += einsum(x39, (0, 1), t3[np.ix_(so,so,sO,sv,sv,sV)], (2, 3, 4, 5, 1, 6), (4, 6, 2, 3, 0, 5)) * -1.0
+    del x39
+    t3new += einsum(x187, (0, 1, 2, 3, 4, 5), (2, 3, 0, 4, 5, 1)) * -0.5
+    t3new += einsum(x187, (0, 1, 2, 3, 4, 5), (2, 3, 0, 5, 4, 1)) * 0.5
+    del x187
+    x188 = np.zeros((naocc, nvir, nvir, nvir), dtype=np.float64)
+    x188 += einsum(v.oovV, (0, 1, 2, 3), t3[np.ix_(so,so,sO,sv,sv,sV)], (0, 1, 4, 5, 6, 3), (4, 5, 6, 2)) * -1.0
+    t3new += einsum(t2[np.ix_(so,so,sv,sV)], (0, 1, 2, 3), x188, (4, 5, 6, 2), (0, 1, 4, 5, 6, 3)) * 0.5
+    del x188
+    x189 = np.zeros((naocc, nocc, nocc, nvir), dtype=np.float64)
+    x189 += einsum(v.oovV, (0, 1, 2, 3), t3[np.ix_(so,so,sO,sv,sv,sV)], (4, 1, 5, 6, 2, 3), (5, 4, 0, 6)) * -1.0
+    x190 = np.zeros((naocc, navir, nocc, nocc, nvir, nvir), dtype=np.float64)
+    x190 += einsum(t2[np.ix_(so,so,sv,sV)], (0, 1, 2, 3), x189, (4, 5, 1, 6), (4, 3, 0, 5, 2, 6)) * -1.0
+    del x189
+    t3new += einsum(x190, (0, 1, 2, 3, 4, 5), (2, 3, 0, 4, 5, 1)) * 0.5
+    t3new += einsum(x190, (0, 1, 2, 3, 4, 5), (2, 3, 0, 5, 4, 1)) * -0.5
+    t3new += einsum(x190, (0, 1, 2, 3, 4, 5), (3, 2, 0, 4, 5, 1)) * -0.5
+    t3new += einsum(x190, (0, 1, 2, 3, 4, 5), (3, 2, 0, 5, 4, 1)) * 0.5
+    del x190
+    x191 = np.zeros((navir, navir, nocc, nocc), dtype=np.float64)
+    x191 += einsum(t2[np.ix_(so,so,sv,sV)], (0, 1, 2, 3), v.oovV, (4, 1, 2, 5), (3, 5, 0, 4))
+    x192 = np.zeros((naocc, navir, nocc, nocc, nvir, nvir), dtype=np.float64)
+    x192 += einsum(x191, (0, 1, 2, 3), t3[np.ix_(so,so,sO,sv,sv,sV)], (4, 3, 5, 6, 7, 1), (5, 0, 2, 4, 6, 7)) * -1.0
+    del x191
+    t3new += einsum(x192, (0, 1, 2, 3, 4, 5), (2, 3, 0, 5, 4, 1)) * -1.0
+    t3new += einsum(x192, (0, 1, 2, 3, 4, 5), (3, 2, 0, 5, 4, 1))
+    del x192
+    x193 = np.zeros((navir, navir, nvir, nvir), dtype=np.float64)
+    x193 += einsum(t2[np.ix_(so,so,sv,sV)], (0, 1, 2, 3), v.oovV, (0, 1, 4, 5), (3, 5, 2, 4))
+    x194 = np.zeros((naocc, navir, nocc, nocc, nvir, nvir), dtype=np.float64)
+    x194 += einsum(x193, (0, 1, 2, 3), t3[np.ix_(so,so,sO,sv,sv,sV)], (4, 5, 6, 7, 3, 1), (6, 0, 4, 5, 2, 7))
+    del x193
+    t3new += einsum(x194, (0, 1, 2, 3, 4, 5), (2, 3, 0, 4, 5, 1)) * -0.25
+    t3new += einsum(x194, (0, 1, 2, 3, 4, 5), (2, 3, 0, 5, 4, 1)) * 0.25
+    del x194
+    x195 = np.zeros((navir, navir), dtype=np.float64)
+    x195 += einsum(t2[np.ix_(so,so,sv,sV)], (0, 1, 2, 3), v.oovV, (0, 1, 2, 4), (3, 4))
+    t3new += einsum(x195, (0, 1), t3[np.ix_(so,so,sO,sv,sv,sV)], (2, 3, 4, 5, 6, 1), (2, 3, 4, 5, 6, 0)) * -0.5
+    del x195
+    x196 = np.zeros((navir, nocc, nvir, nvir), dtype=np.float64)
+    x196 += einsum(v.oOvv, (0, 1, 2, 3), t3[np.ix_(so,so,sO,sv,sv,sV)], (4, 0, 1, 5, 3, 6), (6, 4, 5, 2)) * -1.0
+    x197 = np.zeros((naocc, navir, nocc, nocc, nvir, nvir), dtype=np.float64)
+    x197 += einsum(t2[np.ix_(so,sO,sv,sv)], (0, 1, 2, 3), x196, (4, 5, 6, 3), (1, 4, 0, 5, 2, 6)) * -1.0
+    del x196
+    t3new += einsum(x197, (0, 1, 2, 3, 4, 5), (2, 3, 0, 4, 5, 1)) * 0.5
+    t3new += einsum(x197, (0, 1, 2, 3, 4, 5), (2, 3, 0, 5, 4, 1)) * -0.5
+    t3new += einsum(x197, (0, 1, 2, 3, 4, 5), (3, 2, 0, 4, 5, 1)) * -0.5
+    t3new += einsum(x197, (0, 1, 2, 3, 4, 5), (3, 2, 0, 5, 4, 1)) * 0.5
+    del x197
+    x198 = np.zeros((naocc, naocc, nocc, nocc), dtype=np.float64)
+    x198 += einsum(t2[np.ix_(so,sO,sv,sv)], (0, 1, 2, 3), v.oOvv, (4, 5, 2, 3), (1, 5, 0, 4))
+    x199 = np.zeros((naocc, navir, nocc, nocc, nvir, nvir), dtype=np.float64)
+    x199 += einsum(x198, (0, 1, 2, 3), t3[np.ix_(so,so,sO,sv,sv,sV)], (4, 3, 1, 5, 6, 7), (0, 7, 2, 4, 5, 6))
+    del x198
+    t3new += einsum(x199, (0, 1, 2, 3, 4, 5), (2, 3, 0, 5, 4, 1)) * 0.25
+    t3new += einsum(x199, (0, 1, 2, 3, 4, 5), (3, 2, 0, 5, 4, 1)) * -0.25
+    del x199
+    x200 = np.zeros((navir, nocc, nocc, nocc), dtype=np.float64)
+    x200 += einsum(v.oOvv, (0, 1, 2, 3), t3[np.ix_(so,so,sO,sv,sv,sV)], (4, 5, 1, 2, 3, 6), (6, 4, 5, 0)) * -1.0
+    t3new += einsum(t2[np.ix_(so,sO,sv,sv)], (0, 1, 2, 3), x200, (4, 5, 6, 0), (5, 6, 1, 2, 3, 4)) * 0.5
+    del x200
+    x201 = np.zeros((naocc, naocc, nvir, nvir), dtype=np.float64)
+    x201 += einsum(t2[np.ix_(so,sO,sv,sv)], (0, 1, 2, 3), v.oOvv, (0, 4, 5, 3), (1, 4, 2, 5))
+    x202 = np.zeros((naocc, navir, nocc, nocc, nvir, nvir), dtype=np.float64)
+    x202 += einsum(x201, (0, 1, 2, 3), t3[np.ix_(so,so,sO,sv,sv,sV)], (4, 5, 1, 6, 3, 7), (0, 7, 4, 5, 2, 6)) * -1.0
+    del x201
+    t3new += einsum(x202, (0, 1, 2, 3, 4, 5), (2, 3, 0, 4, 5, 1))
+    t3new += einsum(x202, (0, 1, 2, 3, 4, 5), (2, 3, 0, 5, 4, 1)) * -1.0
+    del x202
+    x203 = np.zeros((naocc, naocc), dtype=np.float64)
+    x203 += einsum(t2[np.ix_(so,sO,sv,sv)], (0, 1, 2, 3), v.oOvv, (0, 4, 2, 3), (1, 4))
+    t3new += einsum(x203, (0, 1), t3[np.ix_(so,so,sO,sv,sv,sV)], (2, 3, 1, 4, 5, 6), (2, 3, 0, 4, 5, 6)) * -0.5
+    del x203
+    x204 = np.zeros((naocc, naocc, navir, navir, nocc, nocc), dtype=np.float64)
+    x204 += einsum(t2[np.ix_(so,sO,sv,sV)], (0, 1, 2, 3), v.oOvV, (4, 5, 2, 6), (1, 5, 3, 6, 0, 4))
+    x205 = np.zeros((naocc, navir, nocc, nocc, nvir, nvir), dtype=np.float64)
+    x205 += einsum(t3[np.ix_(so,so,sO,sv,sv,sV)], (0, 1, 2, 3, 4, 5), x204, (6, 2, 7, 5, 8, 1), (6, 7, 8, 0, 3, 4))
+    del x204
+    t3new += einsum(x205, (0, 1, 2, 3, 4, 5), (2, 3, 0, 5, 4, 1)) * -0.5
+    t3new += einsum(x205, (0, 1, 2, 3, 4, 5), (3, 2, 0, 5, 4, 1)) * 0.5
+    del x205
+    x206 = np.zeros((naocc, navir, nocc, nocc, nvir, nvir), dtype=np.float64)
+    x206 += einsum(t2[np.ix_(so,sO,sv,sV)], (0, 1, 2, 3), x33, (4, 5, 0, 6), (1, 3, 4, 5, 2, 6))
+    del x33
+    t3new += einsum(x206, (0, 1, 2, 3, 4, 5), (2, 3, 0, 4, 5, 1)) * 0.5
+    t3new += einsum(x206, (0, 1, 2, 3, 4, 5), (2, 3, 0, 5, 4, 1)) * -0.5
+    del x206
+    x207 = np.zeros((naocc, naocc, navir, navir), dtype=np.float64)
+    x207 += einsum(t2[np.ix_(so,sO,sv,sV)], (0, 1, 2, 3), v.oOvV, (0, 4, 2, 5), (1, 4, 3, 5))
+    t3new += einsum(x207, (0, 1, 2, 3), t3[np.ix_(so,so,sO,sv,sv,sV)], (4, 5, 1, 6, 7, 3), (4, 5, 0, 6, 7, 2))
+    del x207
+    x208 = np.zeros((naocc, nocc, nocc, nocc), dtype=np.float64)
+    x208 += einsum(t1[np.ix_(so,sv)], (0, 1), v.oovO, (2, 3, 1, 4), (4, 0, 2, 3)) * -1.0
+    x209 = np.zeros((naocc, nocc, nocc, nvir), dtype=np.float64)
+    x209 += einsum(t1[np.ix_(so,sv)], (0, 1), x208, (2, 3, 4, 0), (2, 3, 4, 1))
+    del x208
+    x210 = np.zeros((naocc, navir, nocc, nocc, nvir, nvir), dtype=np.float64)
+    x210 += einsum(t2[np.ix_(so,so,sv,sV)], (0, 1, 2, 3), x209, (4, 5, 1, 6), (4, 3, 5, 0, 6, 2))
+    del x209
+    t3new += einsum(x210, (0, 1, 2, 3, 4, 5), (2, 3, 0, 4, 5, 1))
+    t3new += einsum(x210, (0, 1, 2, 3, 4, 5), (2, 3, 0, 5, 4, 1)) * -1.0
+    t3new += einsum(x210, (0, 1, 2, 3, 4, 5), (3, 2, 0, 4, 5, 1)) * -1.0
+    t3new += einsum(x210, (0, 1, 2, 3, 4, 5), (3, 2, 0, 5, 4, 1))
+    del x210
+    x211 = np.zeros((naocc, navir, nocc, nocc, nocc, nocc), dtype=np.float64)
+    x211 += einsum(t2[np.ix_(so,so,sv,sV)], (0, 1, 2, 3), v.oovO, (4, 5, 2, 6), (6, 3, 0, 1, 4, 5))
+    x212 = np.zeros((naocc, navir, nocc, nocc, nocc, nvir), dtype=np.float64)
+    x212 += einsum(t1[np.ix_(so,sv)], (0, 1), x211, (2, 3, 4, 5, 6, 0), (2, 3, 4, 5, 6, 1))
+    del x211
+    t3new += einsum(t1[np.ix_(so,sv)], (0, 1), x212, (2, 3, 4, 5, 0, 6), (4, 5, 2, 1, 6, 3)) * -1.0
+    del x212
+    x213 = np.zeros((naocc, navir, nocc, nocc, nocc, nvir), dtype=np.float64)
+    x213 += einsum(t2[np.ix_(so,sO,sv,sV)], (0, 1, 2, 3), x21, (4, 0, 5, 6), (1, 3, 4, 5, 6, 2)) * -1.0
+    del x21
+    x214 = np.zeros((naocc, navir, nocc, nocc, nvir, nvir), dtype=np.float64)
+    x214 += einsum(t1[np.ix_(so,sv)], (0, 1), x213, (2, 3, 4, 0, 5, 6), (2, 3, 4, 5, 1, 6))
+    del x213
+    t3new += einsum(x214, (0, 1, 2, 3, 4, 5), (2, 3, 0, 4, 5, 1)) * -1.0
+    t3new += einsum(x214, (0, 1, 2, 3, 4, 5), (2, 3, 0, 5, 4, 1))
+    t3new += einsum(x214, (0, 1, 2, 3, 4, 5), (3, 2, 0, 4, 5, 1))
+    t3new += einsum(x214, (0, 1, 2, 3, 4, 5), (3, 2, 0, 5, 4, 1)) * -1.0
+    del x214
+    x215 = np.zeros((naocc, navir, nocc, nocc, nocc, nvir), dtype=np.float64)
+    x215 += einsum(t1[np.ix_(so,sv)], (0, 1), x153, (2, 3, 4, 5, 0, 6), (2, 3, 4, 5, 6, 1))
+    del x153
+    x216 = np.zeros((naocc, navir, nocc, nocc, nvir, nvir), dtype=np.float64)
+    x216 += einsum(t1[np.ix_(so,sv)], (0, 1), x215, (2, 3, 4, 0, 5, 6), (2, 3, 4, 5, 6, 1)) * -1.0
+    del x215
+    t3new += einsum(x216, (0, 1, 2, 3, 4, 5), (2, 3, 0, 5, 4, 1))
+    t3new += einsum(x216, (0, 1, 2, 3, 4, 5), (3, 2, 0, 5, 4, 1)) * -1.0
+    del x216
+    x217 = np.zeros((naocc, navir, nocc, nocc, nvir, nvir), dtype=np.float64)
+    x217 += einsum(t2[np.ix_(so,sO,sv,sV)], (0, 1, 2, 3), x44, (4, 5, 0, 6), (1, 3, 5, 4, 2, 6)) * -1.0
+    del x44
+    t3new += einsum(x217, (0, 1, 2, 3, 4, 5), (2, 3, 0, 5, 4, 1))
+    t3new += einsum(x217, (0, 1, 2, 3, 4, 5), (2, 3, 0, 4, 5, 1)) * -1.0
+    del x217
+    x218 = np.zeros((naocc, navir, nocc, nocc, nocc, nvir), dtype=np.float64)
+    x218 += einsum(t1[np.ix_(so,sv)], (0, 1), x161, (2, 3, 4, 5, 6, 1), (2, 3, 0, 4, 5, 6))
+    del x161
+    x219 = np.zeros((naocc, navir, nocc, nocc, nvir, nvir), dtype=np.float64)
+    x219 += einsum(t1[np.ix_(so,sv)], (0, 1), x218, (2, 3, 4, 5, 0, 6), (2, 3, 4, 5, 1, 6))
+    del x218
+    t3new += einsum(x219, (0, 1, 2, 3, 4, 5), (2, 3, 0, 4, 5, 1)) * -1.0
+    t3new += einsum(x219, (0, 1, 2, 3, 4, 5), (2, 3, 0, 5, 4, 1))
+    t3new += einsum(x219, (0, 1, 2, 3, 4, 5), (3, 2, 0, 4, 5, 1))
+    t3new += einsum(x219, (0, 1, 2, 3, 4, 5), (3, 2, 0, 5, 4, 1)) * -1.0
+    del x219
+    x220 = np.zeros((navir, nocc, nocc, nvir), dtype=np.float64)
+    x220 += einsum(t1[np.ix_(so,sv)], (0, 1), v.oVvv, (2, 3, 4, 1), (3, 0, 2, 4)) * -1.0
+    x221 = np.zeros((navir, nocc, nocc, nocc), dtype=np.float64)
+    x221 += einsum(t1[np.ix_(so,sv)], (0, 1), x220, (2, 3, 4, 1), (2, 3, 0, 4)) * -1.0
+    t3new += einsum(t2[np.ix_(so,sO,sv,sv)], (0, 1, 2, 3), x221, (4, 5, 6, 0), (5, 6, 1, 2, 3, 4)) * -1.0
+    del x221
+    x222 = np.zeros((naocc, navir, nocc, nocc, nocc, nvir), dtype=np.float64)
+    x222 += einsum(t2[np.ix_(so,sO,sv,sv)], (0, 1, 2, 3), x220, (4, 5, 6, 3), (1, 4, 5, 0, 6, 2))
+    del x220
+    x223 = np.zeros((naocc, navir, nocc, nocc, nvir, nvir), dtype=np.float64)
+    x223 += einsum(t1[np.ix_(so,sv)], (0, 1), x222, (2, 3, 4, 5, 0, 6), (2, 3, 4, 5, 1, 6))
+    del x222
+    t3new += einsum(x223, (0, 1, 2, 3, 4, 5), (2, 3, 0, 4, 5, 1)) * -1.0
+    t3new += einsum(x223, (0, 1, 2, 3, 4, 5), (2, 3, 0, 5, 4, 1))
+    t3new += einsum(x223, (0, 1, 2, 3, 4, 5), (3, 2, 0, 4, 5, 1))
+    t3new += einsum(x223, (0, 1, 2, 3, 4, 5), (3, 2, 0, 5, 4, 1)) * -1.0
+    del x223
+    x224 = np.zeros((naocc, navir, nocc, nvir), dtype=np.float64)
+    x224 += einsum(t1[np.ix_(so,sV)], (0, 1), v.oovO, (2, 0, 3, 4), (4, 1, 2, 3)) * -1.0
+    x225 = np.zeros((naocc, navir, nocc, nocc), dtype=np.float64)
+    x225 += einsum(t1[np.ix_(so,sv)], (0, 1), x224, (2, 3, 4, 1), (2, 3, 0, 4))
+    x226 = np.zeros((naocc, navir, nocc, nocc, nvir, nvir), dtype=np.float64)
+    x226 += einsum(t2[np.ix_(so,so,sv,sv)], (0, 1, 2, 3), x225, (4, 5, 6, 1), (4, 5, 6, 0, 2, 3)) * -1.0
+    del x225
+    t3new += einsum(x226, (0, 1, 2, 3, 4, 5), (2, 3, 0, 5, 4, 1))
+    t3new += einsum(x226, (0, 1, 2, 3, 4, 5), (3, 2, 0, 5, 4, 1)) * -1.0
+    del x226
+    x227 = np.zeros((naocc, navir, nocc, nocc, nocc, nvir), dtype=np.float64)
+    x227 += einsum(t2[np.ix_(so,so,sv,sv)], (0, 1, 2, 3), x224, (4, 5, 6, 3), (4, 5, 0, 1, 6, 2))
+    del x224
+    x228 = np.zeros((naocc, navir, nocc, nocc, nvir, nvir), dtype=np.float64)
+    x228 += einsum(t1[np.ix_(so,sv)], (0, 1), x227, (2, 3, 4, 5, 0, 6), (2, 3, 4, 5, 1, 6)) * -1.0
+    del x227
+    t3new += einsum(x228, (0, 1, 2, 3, 4, 5), (2, 3, 0, 4, 5, 1)) * -1.0
+    t3new += einsum(x228, (0, 1, 2, 3, 4, 5), (2, 3, 0, 5, 4, 1))
+    del x228
+    x229 = np.zeros((navir, nocc, nocc, nvir), dtype=np.float64)
+    x229 += einsum(t1[np.ix_(so,sV)], (0, 1), v.ooov, (2, 0, 3, 4), (1, 2, 3, 4))
+    x230 = np.zeros((navir, nocc, nocc, nocc), dtype=np.float64)
+    x230 += einsum(t1[np.ix_(so,sv)], (0, 1), x229, (2, 3, 4, 1), (2, 0, 3, 4))
+    x231 = np.zeros((naocc, navir, nocc, nocc, nvir, nvir), dtype=np.float64)
+    x231 += einsum(t2[np.ix_(so,sO,sv,sv)], (0, 1, 2, 3), x230, (4, 5, 0, 6), (1, 4, 5, 6, 2, 3))
+    del x230
+    t3new += einsum(x231, (0, 1, 2, 3, 4, 5), (2, 3, 0, 5, 4, 1)) * -1.0
+    t3new += einsum(x231, (0, 1, 2, 3, 4, 5), (3, 2, 0, 5, 4, 1))
+    del x231
+    x232 = np.zeros((naocc, navir, nocc, nocc, nocc, nvir), dtype=np.float64)
+    x232 += einsum(t2[np.ix_(so,sO,sv,sv)], (0, 1, 2, 3), x229, (4, 5, 6, 3), (1, 4, 0, 5, 6, 2)) * -1.0
+    del x229
+    x233 = np.zeros((naocc, navir, nocc, nocc, nvir, nvir), dtype=np.float64)
+    x233 += einsum(t1[np.ix_(so,sv)], (0, 1), x232, (2, 3, 4, 0, 5, 6), (2, 3, 4, 5, 1, 6)) * -1.0
+    del x232
+    t3new += einsum(x233, (0, 1, 2, 3, 4, 5), (2, 3, 0, 4, 5, 1)) * -1.0
+    t3new += einsum(x233, (0, 1, 2, 3, 4, 5), (3, 2, 0, 4, 5, 1))
+    t3new += einsum(x233, (0, 1, 2, 3, 4, 5), (2, 3, 0, 5, 4, 1))
+    t3new += einsum(x233, (0, 1, 2, 3, 4, 5), (3, 2, 0, 5, 4, 1)) * -1.0
+    del x233
+    x234 = np.zeros((navir, nvir, nvir, nvir), dtype=np.float64)
+    x234 += einsum(t1[np.ix_(so,sV)], (0, 1), v.ovvv, (0, 2, 3, 4), (1, 2, 3, 4))
+    x235 = np.zeros((navir, nocc, nvir, nvir), dtype=np.float64)
+    x235 += einsum(t1[np.ix_(so,sv)], (0, 1), x234, (2, 3, 4, 1), (2, 0, 3, 4))
+    del x234
+    x236 = np.zeros((naocc, navir, nocc, nocc, nvir, nvir), dtype=np.float64)
+    x236 += einsum(t2[np.ix_(so,sO,sv,sv)], (0, 1, 2, 3), x235, (4, 5, 6, 3), (1, 4, 5, 0, 2, 6))
+    del x235
+    t3new += einsum(x236, (0, 1, 2, 3, 4, 5), (2, 3, 0, 5, 4, 1)) * -1.0
+    t3new += einsum(x236, (0, 1, 2, 3, 4, 5), (2, 3, 0, 4, 5, 1))
+    t3new += einsum(x236, (0, 1, 2, 3, 4, 5), (3, 2, 0, 5, 4, 1))
+    t3new += einsum(x236, (0, 1, 2, 3, 4, 5), (3, 2, 0, 4, 5, 1)) * -1.0
+    del x236
+    x237 = np.zeros((naocc, nocc, nocc, nocc), dtype=np.float64)
+    x237 += einsum(t1[np.ix_(sO,sv)], (0, 1), v.ooov, (2, 3, 4, 1), (0, 2, 3, 4))
+    x238 = np.zeros((naocc, nocc, nocc, nvir), dtype=np.float64)
+    x238 += einsum(t1[np.ix_(so,sv)], (0, 1), x237, (2, 3, 0, 4), (2, 3, 4, 1))
+    del x237
+    x239 = np.zeros((naocc, navir, nocc, nocc, nvir, nvir), dtype=np.float64)
+    x239 += einsum(t2[np.ix_(so,so,sv,sV)], (0, 1, 2, 3), x238, (4, 1, 5, 6), (4, 3, 0, 5, 6, 2))
+    del x238
+    t3new += einsum(x239, (0, 1, 2, 3, 4, 5), (2, 3, 0, 4, 5, 1))
+    t3new += einsum(x239, (0, 1, 2, 3, 4, 5), (3, 2, 0, 4, 5, 1)) * -1.0
+    t3new += einsum(x239, (0, 1, 2, 3, 4, 5), (2, 3, 0, 5, 4, 1)) * -1.0
+    t3new += einsum(x239, (0, 1, 2, 3, 4, 5), (3, 2, 0, 5, 4, 1))
+    del x239
+    x240 = np.zeros((naocc, nocc, nvir, nvir), dtype=np.float64)
+    x240 += einsum(t1[np.ix_(sO,sv)], (0, 1), v.ovvv, (2, 3, 4, 1), (0, 2, 3, 4))
+    x241 = np.zeros((naocc, nocc, nocc, nvir), dtype=np.float64)
+    x241 += einsum(t1[np.ix_(so,sv)], (0, 1), x240, (2, 3, 4, 1), (2, 0, 3, 4)) * -1.0
+    x242 = np.zeros((naocc, navir, nocc, nocc, nvir, nvir), dtype=np.float64)
+    x242 += einsum(t2[np.ix_(so,so,sv,sV)], (0, 1, 2, 3), x241, (4, 5, 1, 6), (4, 3, 5, 0, 2, 6)) * -1.0
+    del x241
+    t3new += einsum(x242, (0, 1, 2, 3, 4, 5), (2, 3, 0, 5, 4, 1))
+    t3new += einsum(x242, (0, 1, 2, 3, 4, 5), (2, 3, 0, 4, 5, 1)) * -1.0
+    t3new += einsum(x242, (0, 1, 2, 3, 4, 5), (3, 2, 0, 5, 4, 1)) * -1.0
+    t3new += einsum(x242, (0, 1, 2, 3, 4, 5), (3, 2, 0, 4, 5, 1))
+    del x242
+    x243 = np.zeros((naocc, navir, nocc, nocc, nocc, nvir), dtype=np.float64)
+    x243 += einsum(t2[np.ix_(so,so,sv,sV)], (0, 1, 2, 3), x240, (4, 5, 6, 2), (4, 3, 0, 1, 5, 6))
+    del x240
+    x244 = np.zeros((naocc, navir, nocc, nocc, nvir, nvir), dtype=np.float64)
+    x244 += einsum(t1[np.ix_(so,sv)], (0, 1), x243, (2, 3, 4, 5, 0, 6), (2, 3, 4, 5, 1, 6))
+    del x243
+    t3new += einsum(x244, (0, 1, 2, 3, 4, 5), (2, 3, 0, 4, 5, 1))
+    t3new += einsum(x244, (0, 1, 2, 3, 4, 5), (2, 3, 0, 5, 4, 1)) * -1.0
+    del x244
+    x245 = np.zeros((naocc, navir, nocc, nvir), dtype=np.float64)
+    x245 += einsum(t1[np.ix_(sO,sv)], (0, 1), v.oVvv, (2, 3, 4, 1), (0, 3, 2, 4)) * -1.0
+    x246 = np.zeros((naocc, navir, nocc, nocc), dtype=np.float64)
+    x246 += einsum(t1[np.ix_(so,sv)], (0, 1), x245, (2, 3, 4, 1), (2, 3, 0, 4)) * -1.0
+    x247 = np.zeros((naocc, navir, nocc, nocc, nvir, nvir), dtype=np.float64)
+    x247 += einsum(t2[np.ix_(so,so,sv,sv)], (0, 1, 2, 3), x246, (4, 5, 6, 1), (4, 5, 6, 0, 2, 3))
+    del x246
+    t3new += einsum(x247, (0, 1, 2, 3, 4, 5), (2, 3, 0, 5, 4, 1)) * -1.0
+    t3new += einsum(x247, (0, 1, 2, 3, 4, 5), (3, 2, 0, 5, 4, 1))
+    del x247
+    x248 = np.zeros((naocc, navir, nocc, nocc, nocc, nvir), dtype=np.float64)
+    x248 += einsum(t2[np.ix_(so,so,sv,sv)], (0, 1, 2, 3), x245, (4, 5, 6, 3), (4, 5, 0, 1, 6, 2)) * -1.0
+    del x245
+    x249 = np.zeros((naocc, navir, nocc, nocc, nvir, nvir), dtype=np.float64)
+    x249 += einsum(t1[np.ix_(so,sv)], (0, 1), x248, (2, 3, 4, 5, 0, 6), (2, 3, 4, 5, 1, 6))
+    del x248
+    t3new += einsum(x249, (0, 1, 2, 3, 4, 5), (2, 3, 0, 4, 5, 1))
+    t3new += einsum(x249, (0, 1, 2, 3, 4, 5), (2, 3, 0, 5, 4, 1)) * -1.0
+    del x249
+    x250 = np.zeros((naocc, navir, nocc, nocc), dtype=np.float64)
+    x250 += einsum(t1[np.ix_(so,sV)], (0, 1), t1[np.ix_(sO,sv)], (2, 3), v.ooov, (4, 0, 5, 3), (2, 1, 4, 5))
+    x251 = np.zeros((naocc, navir, nocc, nocc, nvir, nvir), dtype=np.float64)
+    x251 += einsum(t2[np.ix_(so,so,sv,sv)], (0, 1, 2, 3), x250, (4, 5, 1, 6), (4, 5, 0, 6, 2, 3)) * -1.0
+    del x250
+    t3new += einsum(x251, (0, 1, 2, 3, 4, 5), (2, 3, 0, 5, 4, 1))
+    t3new += einsum(x251, (0, 1, 2, 3, 4, 5), (3, 2, 0, 5, 4, 1)) * -1.0
+    del x251
+    x252 = np.zeros((naocc, navir, nvir, nvir), dtype=np.float64)
+    x252 += einsum(t1[np.ix_(so,sV)], (0, 1), t1[np.ix_(sO,sv)], (2, 3), v.ovvv, (0, 4, 5, 3), (2, 1, 4, 5))
+    x253 = np.zeros((naocc, navir, nocc, nocc, nvir, nvir), dtype=np.float64)
+    x253 += einsum(t2[np.ix_(so,so,sv,sv)], (0, 1, 2, 3), x252, (4, 5, 6, 3), (4, 5, 0, 1, 2, 6)) * -1.0
+    del x252
+    t3new += einsum(x253, (0, 1, 2, 3, 4, 5), (2, 3, 0, 5, 4, 1))
+    t3new += einsum(x253, (0, 1, 2, 3, 4, 5), (2, 3, 0, 4, 5, 1)) * -1.0
+    del x253
+    x254 = np.zeros((naocc, navir, nocc, nocc, nocc, nvir), dtype=np.float64)
+    x254 += einsum(x3, (0, 1, 2, 3), t3[np.ix_(so,so,sO,sv,sv,sV)], (4, 1, 5, 6, 3, 7), (5, 7, 0, 4, 2, 6))
+    x255 = np.zeros((naocc, navir, nocc, nocc, nvir, nvir), dtype=np.float64)
+    x255 += einsum(t1[np.ix_(so,sv)], (0, 1), x254, (2, 3, 4, 5, 0, 6), (2, 3, 4, 5, 1, 6))
+    del x254
+    t3new += einsum(x255, (0, 1, 2, 3, 4, 5), (2, 3, 0, 4, 5, 1)) * -1.0
+    t3new += einsum(x255, (0, 1, 2, 3, 4, 5), (2, 3, 0, 5, 4, 1))
+    t3new += einsum(x255, (0, 1, 2, 3, 4, 5), (3, 2, 0, 4, 5, 1))
+    t3new += einsum(x255, (0, 1, 2, 3, 4, 5), (3, 2, 0, 5, 4, 1)) * -1.0
+    del x255
+    x256 = np.zeros((naocc, navir, nocc, nocc, nvir, nvir), dtype=np.float64)
+    x256 += einsum(x6, (0, 1), t3[np.ix_(so,so,sO,sv,sv,sV)], (2, 1, 3, 4, 5, 6), (3, 6, 0, 2, 4, 5)) * -1.0
+    del x6
+    t3new += einsum(x256, (0, 1, 2, 3, 4, 5), (2, 3, 0, 5, 4, 1))
+    t3new += einsum(x256, (0, 1, 2, 3, 4, 5), (3, 2, 0, 5, 4, 1)) * -1.0
+    del x256
+    x257 = np.zeros((naocc, navir, nocc, nocc, nocc, nvir), dtype=np.float64)
+    x257 += einsum(t1[np.ix_(so,sv)], (0, 1), x186, (2, 3, 4, 5, 6, 0), (2, 3, 4, 5, 6, 1))
+    del x186
+    t3new += einsum(t1[np.ix_(so,sv)], (0, 1), x257, (2, 3, 4, 5, 0, 6), (4, 5, 2, 1, 6, 3)) * 0.5
+    del x257
+    x258 = np.zeros((naocc, navir, nocc, nocc, nocc, nvir), dtype=np.float64)
+    x258 += einsum(x5, (0, 1), t3[np.ix_(so,so,sO,sv,sv,sV)], (2, 3, 4, 5, 1, 6), (4, 6, 2, 3, 0, 5)) * -1.0
+    x259 = np.zeros((naocc, navir, nocc, nocc, nvir, nvir), dtype=np.float64)
+    x259 += einsum(t1[np.ix_(so,sv)], (0, 1), x258, (2, 3, 4, 5, 0, 6), (2, 3, 4, 5, 1, 6))
+    del x258
+    t3new += einsum(x259, (0, 1, 2, 3, 4, 5), (2, 3, 0, 4, 5, 1)) * -1.0
+    t3new += einsum(x259, (0, 1, 2, 3, 4, 5), (2, 3, 0, 5, 4, 1))
+    del x259
+    x260 = np.zeros((navir, navir, nocc, nvir), dtype=np.float64)
+    x260 += einsum(t1[np.ix_(so,sV)], (0, 1), v.oovV, (2, 0, 3, 4), (1, 4, 2, 3)) * -1.0
+    x261 = np.zeros((navir, navir, nocc, nocc), dtype=np.float64)
+    x261 += einsum(t1[np.ix_(so,sv)], (0, 1), x260, (2, 3, 4, 1), (2, 3, 0, 4))
+    x262 = np.zeros((naocc, navir, nocc, nocc, nvir, nvir), dtype=np.float64)
+    x262 += einsum(x261, (0, 1, 2, 3), t3[np.ix_(so,so,sO,sv,sv,sV)], (4, 3, 5, 6, 7, 1), (5, 0, 2, 4, 6, 7)) * -1.0
+    del x261
+    t3new += einsum(x262, (0, 1, 2, 3, 4, 5), (2, 3, 0, 5, 4, 1))
+    t3new += einsum(x262, (0, 1, 2, 3, 4, 5), (3, 2, 0, 5, 4, 1)) * -1.0
+    del x262
+    x263 = np.zeros((naocc, navir, nocc, nocc, nocc, nvir), dtype=np.float64)
+    x263 += einsum(x260, (0, 1, 2, 3), t3[np.ix_(so,so,sO,sv,sv,sV)], (4, 5, 6, 7, 3, 1), (6, 0, 4, 5, 2, 7))
+    del x260
+    x264 = np.zeros((naocc, navir, nocc, nocc, nvir, nvir), dtype=np.float64)
+    x264 += einsum(t1[np.ix_(so,sv)], (0, 1), x263, (2, 3, 4, 5, 0, 6), (2, 3, 4, 5, 1, 6)) * -1.0
+    del x263
+    t3new += einsum(x264, (0, 1, 2, 3, 4, 5), (2, 3, 0, 4, 5, 1)) * -0.5
+    t3new += einsum(x264, (0, 1, 2, 3, 4, 5), (2, 3, 0, 5, 4, 1)) * 0.5
+    del x264
+    x265 = np.zeros((navir, nocc), dtype=np.float64)
+    x265 += einsum(t1[np.ix_(so,sv)], (0, 1), v.oovV, (2, 0, 1, 3), (3, 2)) * -1.0
+    x266 = np.zeros((navir, navir), dtype=np.float64)
+    x266 += einsum(t1[np.ix_(so,sV)], (0, 1), x265, (2, 0), (1, 2))
+    del x265
+    t3new += einsum(x266, (0, 1), t3[np.ix_(so,so,sO,sv,sv,sV)], (2, 3, 4, 5, 6, 1), (2, 3, 4, 5, 6, 0)) * -1.0
+    del x266
+    x267 = np.zeros((naocc, naocc, nocc, nvir), dtype=np.float64)
+    x267 += einsum(t1[np.ix_(sO,sv)], (0, 1), v.oOvv, (2, 3, 4, 1), (0, 3, 2, 4)) * -1.0
+    x268 = np.zeros((naocc, naocc, nocc, nocc), dtype=np.float64)
+    x268 += einsum(t1[np.ix_(so,sv)], (0, 1), x267, (2, 3, 4, 1), (2, 3, 0, 4)) * -1.0
+    x269 = np.zeros((naocc, navir, nocc, nocc, nvir, nvir), dtype=np.float64)
+    x269 += einsum(x268, (0, 1, 2, 3), t3[np.ix_(so,so,sO,sv,sv,sV)], (4, 3, 1, 5, 6, 7), (0, 7, 2, 4, 5, 6))
+    del x268
+    t3new += einsum(x269, (0, 1, 2, 3, 4, 5), (2, 3, 0, 5, 4, 1)) * 0.5
+    t3new += einsum(x269, (0, 1, 2, 3, 4, 5), (3, 2, 0, 5, 4, 1)) * -0.5
+    del x269
+    x270 = np.zeros((naocc, navir, nocc, nocc, nocc, nvir), dtype=np.float64)
+    x270 += einsum(x267, (0, 1, 2, 3), t3[np.ix_(so,so,sO,sv,sv,sV)], (4, 5, 1, 6, 3, 7), (0, 7, 4, 5, 2, 6)) * -1.0
+    del x267
+    x271 = np.zeros((naocc, navir, nocc, nocc, nvir, nvir), dtype=np.float64)
+    x271 += einsum(t1[np.ix_(so,sv)], (0, 1), x270, (2, 3, 4, 5, 0, 6), (2, 3, 4, 5, 1, 6))
+    del x270
+    t3new += einsum(x271, (0, 1, 2, 3, 4, 5), (2, 3, 0, 4, 5, 1)) * -1.0
+    t3new += einsum(x271, (0, 1, 2, 3, 4, 5), (2, 3, 0, 5, 4, 1))
+    del x271
+    x272 = np.zeros((naocc, nvir), dtype=np.float64)
+    x272 += einsum(t1[np.ix_(so,sv)], (0, 1), v.oOvv, (0, 2, 3, 1), (2, 3)) * -1.0
+    x273 = np.zeros((naocc, naocc), dtype=np.float64)
+    x273 += einsum(t1[np.ix_(sO,sv)], (0, 1), x272, (2, 1), (0, 2))
+    del x272
+    t3new += einsum(x273, (0, 1), t3[np.ix_(so,so,sO,sv,sv,sV)], (2, 3, 1, 4, 5, 6), (2, 3, 0, 4, 5, 6)) * -1.0
+    del x273
+    x274 = np.zeros((naocc, naocc, navir, nocc), dtype=np.float64)
+    x274 += einsum(t1[np.ix_(sO,sv)], (0, 1), v.oOvV, (2, 3, 1, 4), (0, 3, 4, 2))
+    x275 = np.zeros((naocc, naocc, navir, navir), dtype=np.float64)
+    x275 += einsum(t1[np.ix_(so,sV)], (0, 1), x274, (2, 3, 4, 0), (2, 3, 1, 4))
+    del x274
+    t3new += einsum(x275, (0, 1, 2, 3), t3[np.ix_(so,so,sO,sv,sv,sV)], (4, 5, 1, 6, 7, 3), (4, 5, 0, 6, 7, 2)) * -1.0
+    del x275
+    x276 = np.zeros((naocc, navir, nocc, nocc, nvir, nvir), dtype=np.float64)
+    x276 += einsum(t2[np.ix_(so,sO,sv,sV)], (0, 1, 2, 3), x47, (4, 5, 0, 6), (1, 3, 4, 5, 2, 6))
+    del x47
+    t3new += einsum(x276, (0, 1, 2, 3, 4, 5), (2, 3, 0, 5, 4, 1))
+    t3new += einsum(x276, (0, 1, 2, 3, 4, 5), (2, 3, 0, 4, 5, 1)) * -1.0
+    t3new += einsum(x276, (0, 1, 2, 3, 4, 5), (3, 2, 0, 5, 4, 1)) * -1.0
+    t3new += einsum(x276, (0, 1, 2, 3, 4, 5), (3, 2, 0, 4, 5, 1))
+    del x276
+    x277 = np.zeros((naocc, navir, nocc, nvir), dtype=np.float64)
+    x277 += einsum(t2[np.ix_(so,sO,sv,sV)], (0, 1, 2, 3), v.oovv, (4, 0, 5, 2), (1, 3, 4, 5))
+    x278 = np.zeros((naocc, navir, nocc, nocc), dtype=np.float64)
+    x278 += einsum(t1[np.ix_(so,sv)], (0, 1), x277, (2, 3, 4, 1), (2, 3, 0, 4))
+    x279 = np.zeros((naocc, navir, nocc, nocc, nvir, nvir), dtype=np.float64)
+    x279 += einsum(t2[np.ix_(so,so,sv,sv)], (0, 1, 2, 3), x278, (4, 5, 6, 1), (4, 5, 6, 0, 2, 3)) * -1.0
+    del x278
+    t3new += einsum(x279, (0, 1, 2, 3, 4, 5), (2, 3, 0, 5, 4, 1))
+    t3new += einsum(x279, (0, 1, 2, 3, 4, 5), (3, 2, 0, 5, 4, 1)) * -1.0
+    del x279
+    x280 = np.zeros((naocc, navir, nocc, nocc, nocc, nvir), dtype=np.float64)
+    x280 += einsum(t2[np.ix_(so,sO,sv,sV)], (0, 1, 2, 3), v.oovv, (4, 5, 6, 2), (1, 3, 0, 4, 5, 6))
+    x281 = np.zeros((naocc, navir, nocc, nocc, nocc, nocc), dtype=np.float64)
+    x281 += einsum(t1[np.ix_(so,sv)], (0, 1), x280, (2, 3, 4, 5, 6, 1), (2, 3, 0, 4, 6, 5)) * -1.0
+    x282 = np.zeros((naocc, navir, nocc, nocc, nvir, nvir), dtype=np.float64)
+    x282 += einsum(t2[np.ix_(so,so,sv,sv)], (0, 1, 2, 3), x281, (4, 5, 6, 7, 1, 0), (4, 5, 6, 7, 2, 3)) * -1.0
+    t3new += einsum(x282, (0, 1, 2, 3, 4, 5), (2, 3, 0, 5, 4, 1)) * -0.5
+    t3new += einsum(x282, (0, 1, 2, 3, 4, 5), (3, 2, 0, 5, 4, 1)) * 0.5
+    del x282
+    x283 = np.zeros((naocc, nocc, nocc, nvir), dtype=np.float64)
+    x283 += einsum(t2[np.ix_(so,sO,sv,sv)], (0, 1, 2, 3), x3, (4, 0, 5, 3), (1, 4, 5, 2)) * -1.0
+    x284 = np.zeros((naocc, navir, nocc, nocc, nvir, nvir), dtype=np.float64)
+    x284 += einsum(t2[np.ix_(so,so,sv,sV)], (0, 1, 2, 3), x283, (4, 5, 1, 6), (4, 3, 5, 0, 6, 2))
+    del x283
+    t3new += einsum(x284, (0, 1, 2, 3, 4, 5), (2, 3, 0, 5, 4, 1)) * -1.0
+    t3new += einsum(x284, (0, 1, 2, 3, 4, 5), (2, 3, 0, 4, 5, 1))
+    t3new += einsum(x284, (0, 1, 2, 3, 4, 5), (3, 2, 0, 5, 4, 1))
+    t3new += einsum(x284, (0, 1, 2, 3, 4, 5), (3, 2, 0, 4, 5, 1)) * -1.0
+    del x284
+    x285 = np.zeros((navir, nocc, nocc, nvir), dtype=np.float64)
+    x285 += einsum(t2[np.ix_(so,so,sv,sV)], (0, 1, 2, 3), v.oovv, (4, 1, 5, 2), (3, 0, 4, 5)) * -1.0
+    x286 = np.zeros((navir, nocc, nocc, nocc), dtype=np.float64)
+    x286 += einsum(t1[np.ix_(so,sv)], (0, 1), x285, (2, 3, 4, 1), (2, 0, 3, 4))
+    x287 = np.zeros((naocc, navir, nocc, nocc, nvir, nvir), dtype=np.float64)
+    x287 += einsum(t2[np.ix_(so,sO,sv,sv)], (0, 1, 2, 3), x286, (4, 5, 6, 0), (1, 4, 5, 6, 2, 3)) * -1.0
+    del x286
+    t3new += einsum(x287, (0, 1, 2, 3, 4, 5), (2, 3, 0, 5, 4, 1))
+    t3new += einsum(x287, (0, 1, 2, 3, 4, 5), (3, 2, 0, 5, 4, 1)) * -1.0
+    del x287
+    x288 = np.zeros((navir, nocc, nvir, nvir), dtype=np.float64)
+    x288 += einsum(t2[np.ix_(so,so,sv,sV)], (0, 1, 2, 3), x3, (4, 0, 1, 5), (3, 4, 2, 5)) * -1.0
+    del x3
+    x289 = np.zeros((naocc, navir, nocc, nocc, nvir, nvir), dtype=np.float64)
+    x289 += einsum(t2[np.ix_(so,sO,sv,sv)], (0, 1, 2, 3), x288, (4, 5, 6, 3), (1, 4, 5, 0, 2, 6))
+    del x288
+    t3new += einsum(x289, (0, 1, 2, 3, 4, 5), (2, 3, 0, 5, 4, 1)) * 0.5
+    t3new += einsum(x289, (0, 1, 2, 3, 4, 5), (2, 3, 0, 4, 5, 1)) * -0.5
+    t3new += einsum(x289, (0, 1, 2, 3, 4, 5), (3, 2, 0, 5, 4, 1)) * -0.5
+    t3new += einsum(x289, (0, 1, 2, 3, 4, 5), (3, 2, 0, 4, 5, 1)) * 0.5
+    del x289
+    x290 = np.zeros((naocc, navir, nocc, nocc, nocc, nvir), dtype=np.float64)
+    x290 += einsum(t2[np.ix_(so,so,sv,sv)], (0, 1, 2, 3), x280, (4, 5, 6, 7, 1, 3), (4, 5, 6, 0, 7, 2)) * -1.0
+    del x280
+    x291 = np.zeros((naocc, navir, nocc, nocc, nvir, nvir), dtype=np.float64)
+    x291 += einsum(t1[np.ix_(so,sv)], (0, 1), x290, (2, 3, 4, 5, 0, 6), (2, 3, 4, 5, 1, 6))
+    del x290
+    t3new += einsum(x291, (0, 1, 2, 3, 4, 5), (3, 2, 0, 4, 5, 1))
+    t3new += einsum(x291, (0, 1, 2, 3, 4, 5), (2, 3, 0, 4, 5, 1)) * -1.0
+    t3new += einsum(x291, (0, 1, 2, 3, 4, 5), (3, 2, 0, 5, 4, 1)) * -1.0
+    t3new += einsum(x291, (0, 1, 2, 3, 4, 5), (2, 3, 0, 5, 4, 1))
+    del x291
+    x292 = np.zeros((naocc, navir, nocc, nocc, nocc, nvir), dtype=np.float64)
+    x292 += einsum(t2[np.ix_(so,so,sv,sv)], (0, 1, 2, 3), x277, (4, 5, 6, 3), (4, 5, 0, 1, 6, 2)) * -1.0
+    del x277
+    x293 = np.zeros((naocc, navir, nocc, nocc, nvir, nvir), dtype=np.float64)
+    x293 += einsum(t1[np.ix_(so,sv)], (0, 1), x292, (2, 3, 4, 5, 0, 6), (2, 3, 4, 5, 1, 6))
+    del x292
+    t3new += einsum(x293, (0, 1, 2, 3, 4, 5), (2, 3, 0, 4, 5, 1)) * -1.0
+    t3new += einsum(x293, (0, 1, 2, 3, 4, 5), (2, 3, 0, 5, 4, 1))
+    del x293
+    x294 = np.zeros((naocc, navir, nocc, nocc, nocc, nvir), dtype=np.float64)
+    x294 += einsum(t2[np.ix_(so,sO,sv,sV)], (0, 1, 2, 3), x41, (4, 5, 0, 6), (1, 3, 4, 5, 6, 2)) * -1.0
+    del x41
+    x295 = np.zeros((naocc, navir, nocc, nocc, nvir, nvir), dtype=np.float64)
+    x295 += einsum(t1[np.ix_(so,sv)], (0, 1), x294, (2, 3, 4, 5, 0, 6), (2, 3, 4, 5, 1, 6))
+    del x294
+    t3new += einsum(x295, (0, 1, 2, 3, 4, 5), (2, 3, 0, 4, 5, 1)) * 0.5
+    t3new += einsum(x295, (0, 1, 2, 3, 4, 5), (2, 3, 0, 5, 4, 1)) * -0.5
+    del x295
+    x296 = np.zeros((naocc, nocc, nocc, nocc), dtype=np.float64)
+    x296 += einsum(t2[np.ix_(so,sO,sv,sv)], (0, 1, 2, 3), v.oovv, (4, 5, 2, 3), (1, 0, 4, 5)) * -1.0
+    x297 = np.zeros((naocc, nocc, nocc, nvir), dtype=np.float64)
+    x297 += einsum(t1[np.ix_(so,sv)], (0, 1), x296, (2, 3, 4, 0), (2, 3, 4, 1))
+    del x296
+    x298 = np.zeros((naocc, navir, nocc, nocc, nvir, nvir), dtype=np.float64)
+    x298 += einsum(t2[np.ix_(so,so,sv,sV)], (0, 1, 2, 3), x297, (4, 5, 1, 6), (4, 3, 5, 0, 6, 2))
+    del x297
+    t3new += einsum(x298, (0, 1, 2, 3, 4, 5), (3, 2, 0, 4, 5, 1)) * -0.5
+    t3new += einsum(x298, (0, 1, 2, 3, 4, 5), (2, 3, 0, 4, 5, 1)) * 0.5
+    t3new += einsum(x298, (0, 1, 2, 3, 4, 5), (3, 2, 0, 5, 4, 1)) * 0.5
+    t3new += einsum(x298, (0, 1, 2, 3, 4, 5), (2, 3, 0, 5, 4, 1)) * -0.5
+    del x298
+    x299 = np.zeros((naocc, navir, nocc, nocc, nocc, nvir), dtype=np.float64)
+    x299 += einsum(t2[np.ix_(so,sO,sv,sv)], (0, 1, 2, 3), x285, (4, 5, 6, 3), (1, 4, 0, 5, 6, 2)) * -1.0
+    del x285
+    x300 = np.zeros((naocc, navir, nocc, nocc, nvir, nvir), dtype=np.float64)
+    x300 += einsum(t1[np.ix_(so,sv)], (0, 1), x299, (2, 3, 4, 5, 0, 6), (2, 3, 4, 5, 1, 6))
+    del x299
+    t3new += einsum(x300, (0, 1, 2, 3, 4, 5), (3, 2, 0, 4, 5, 1)) * -1.0
+    t3new += einsum(x300, (0, 1, 2, 3, 4, 5), (2, 3, 0, 4, 5, 1))
+    t3new += einsum(x300, (0, 1, 2, 3, 4, 5), (3, 2, 0, 5, 4, 1))
+    t3new += einsum(x300, (0, 1, 2, 3, 4, 5), (2, 3, 0, 5, 4, 1)) * -1.0
+    del x300
+    x301 = np.zeros((naocc, nocc, nvir, nvir), dtype=np.float64)
+    x301 += einsum(t2[np.ix_(so,sO,sv,sv)], (0, 1, 2, 3), v.oovv, (4, 0, 5, 3), (1, 4, 2, 5)) * -1.0
+    x302 = np.zeros((naocc, navir, nocc, nocc, nocc, nvir), dtype=np.float64)
+    x302 += einsum(t2[np.ix_(so,so,sv,sV)], (0, 1, 2, 3), x301, (4, 5, 6, 2), (4, 3, 0, 1, 5, 6))
+    del x301
+    x303 = np.zeros((naocc, navir, nocc, nocc, nvir, nvir), dtype=np.float64)
+    x303 += einsum(t1[np.ix_(so,sv)], (0, 1), x302, (2, 3, 4, 5, 0, 6), (2, 3, 4, 5, 1, 6))
+    del x302
+    t3new += einsum(x303, (0, 1, 2, 3, 4, 5), (2, 3, 0, 4, 5, 1))
+    t3new += einsum(x303, (0, 1, 2, 3, 4, 5), (2, 3, 0, 5, 4, 1)) * -1.0
+    del x303
+    x304 = np.zeros((naocc, navir, nocc, nocc), dtype=np.float64)
+    x304 += einsum(x5, (0, 1), t2[np.ix_(so,sO,sv,sV)], (2, 3, 1, 4), (3, 4, 2, 0)) * -1.0
+    x305 = np.zeros((naocc, navir, nocc, nocc, nvir, nvir), dtype=np.float64)
+    x305 += einsum(t2[np.ix_(so,so,sv,sv)], (0, 1, 2, 3), x304, (4, 5, 6, 1), (4, 5, 6, 0, 2, 3)) * -1.0
+    del x304
+    t3new += einsum(x305, (0, 1, 2, 3, 4, 5), (3, 2, 0, 5, 4, 1))
+    t3new += einsum(x305, (0, 1, 2, 3, 4, 5), (2, 3, 0, 5, 4, 1)) * -1.0
+    del x305
+    x306 = np.zeros((naocc, navir, nocc, nocc, nvir, nvir), dtype=np.float64)
+    x306 += einsum(t2[np.ix_(so,sO,sv,sV)], (0, 1, 2, 3), x51, (4, 5, 0, 6), (1, 3, 4, 5, 2, 6)) * -1.0
+    del x51
+    t3new += einsum(x306, (0, 1, 2, 3, 4, 5), (2, 3, 0, 5, 4, 1)) * -1.0
+    t3new += einsum(x306, (0, 1, 2, 3, 4, 5), (2, 3, 0, 4, 5, 1))
+    del x306
+    x307 = np.zeros((naocc, nocc, nocc, nvir), dtype=np.float64)
+    x307 += einsum(x5, (0, 1), t2[np.ix_(so,sO,sv,sv)], (2, 3, 4, 1), (3, 2, 0, 4))
+    x308 = np.zeros((naocc, navir, nocc, nocc, nvir, nvir), dtype=np.float64)
+    x308 += einsum(t2[np.ix_(so,so,sv,sV)], (0, 1, 2, 3), x307, (4, 5, 1, 6), (4, 3, 5, 0, 6, 2))
+    del x307
+    t3new += einsum(x308, (0, 1, 2, 3, 4, 5), (3, 2, 0, 5, 4, 1)) * -1.0
+    t3new += einsum(x308, (0, 1, 2, 3, 4, 5), (3, 2, 0, 4, 5, 1))
+    t3new += einsum(x308, (0, 1, 2, 3, 4, 5), (2, 3, 0, 5, 4, 1))
+    t3new += einsum(x308, (0, 1, 2, 3, 4, 5), (2, 3, 0, 4, 5, 1)) * -1.0
+    del x308
+    x309 = np.zeros((navir, nocc, nocc, nocc), dtype=np.float64)
+    x309 += einsum(x5, (0, 1), t2[np.ix_(so,so,sv,sV)], (2, 3, 1, 4), (4, 2, 3, 0))
+    del x5
+    t3new += einsum(t2[np.ix_(so,sO,sv,sv)], (0, 1, 2, 3), x309, (4, 5, 6, 0), (5, 6, 1, 2, 3, 4))
+    del x309
+    x310 = np.zeros((navir, nocc, nvir, nvir), dtype=np.float64)
+    x310 += einsum(t1[np.ix_(so,sV)], (0, 1), v.oovv, (2, 0, 3, 4), (1, 2, 3, 4))
+    x311 = np.zeros((navir, nocc, nvir, nvir), dtype=np.float64)
+    x311 += einsum(t2[np.ix_(so,so,sv,sv)], (0, 1, 2, 3), x310, (4, 1, 3, 5), (4, 0, 2, 5))
+    x312 = np.zeros((naocc, navir, nocc, nocc, nvir, nvir), dtype=np.float64)
+    x312 += einsum(t2[np.ix_(so,sO,sv,sv)], (0, 1, 2, 3), x311, (4, 5, 6, 3), (1, 4, 0, 5, 2, 6)) * -1.0
+    del x311
+    t3new += einsum(x312, (0, 1, 2, 3, 4, 5), (3, 2, 0, 5, 4, 1))
+    t3new += einsum(x312, (0, 1, 2, 3, 4, 5), (3, 2, 0, 4, 5, 1)) * -1.0
+    t3new += einsum(x312, (0, 1, 2, 3, 4, 5), (2, 3, 0, 5, 4, 1)) * -1.0
+    t3new += einsum(x312, (0, 1, 2, 3, 4, 5), (2, 3, 0, 4, 5, 1))
+    del x312
+    x313 = np.zeros((naocc, navir, nocc, nocc), dtype=np.float64)
+    x313 += einsum(t2[np.ix_(so,sO,sv,sv)], (0, 1, 2, 3), x310, (4, 5, 2, 3), (1, 4, 0, 5)) * -1.0
+    x314 = np.zeros((naocc, navir, nocc, nocc, nvir, nvir), dtype=np.float64)
+    x314 += einsum(t2[np.ix_(so,so,sv,sv)], (0, 1, 2, 3), x313, (4, 5, 6, 1), (4, 5, 6, 0, 2, 3)) * -1.0
+    del x313
+    t3new += einsum(x314, (0, 1, 2, 3, 4, 5), (3, 2, 0, 5, 4, 1)) * -0.5
+    t3new += einsum(x314, (0, 1, 2, 3, 4, 5), (2, 3, 0, 5, 4, 1)) * 0.5
+    del x314
+    x315 = np.zeros((naocc, navir, nvir, nvir), dtype=np.float64)
+    x315 += einsum(t2[np.ix_(so,sO,sv,sv)], (0, 1, 2, 3), x310, (4, 0, 3, 5), (1, 4, 2, 5)) * -1.0
+    x316 = np.zeros((naocc, navir, nocc, nocc, nvir, nvir), dtype=np.float64)
+    x316 += einsum(t2[np.ix_(so,so,sv,sv)], (0, 1, 2, 3), x315, (4, 5, 6, 3), (4, 5, 0, 1, 6, 2)) * -1.0
+    del x315
+    t3new += einsum(x316, (0, 1, 2, 3, 4, 5), (2, 3, 0, 5, 4, 1)) * -1.0
+    t3new += einsum(x316, (0, 1, 2, 3, 4, 5), (2, 3, 0, 4, 5, 1))
+    del x316
+    x317 = np.zeros((navir, nocc, nocc, nocc), dtype=np.float64)
+    x317 += einsum(t2[np.ix_(so,so,sv,sv)], (0, 1, 2, 3), x310, (4, 5, 2, 3), (4, 0, 1, 5))
+    t3new += einsum(t2[np.ix_(so,sO,sv,sv)], (0, 1, 2, 3), x317, (4, 5, 6, 0), (5, 6, 1, 2, 3, 4)) * -0.5
+    del x317
+    x318 = np.zeros((naocc, nocc, nocc, nvir), dtype=np.float64)
+    x318 += einsum(t1[np.ix_(sO,sv)], (0, 1), v.oovv, (2, 3, 4, 1), (0, 2, 3, 4))
+    x319 = np.zeros((naocc, nocc, nocc, nvir), dtype=np.float64)
+    x319 += einsum(t2[np.ix_(so,so,sv,sv)], (0, 1, 2, 3), x318, (4, 1, 5, 3), (4, 0, 5, 2))
+    x320 = np.zeros((naocc, navir, nocc, nocc, nvir, nvir), dtype=np.float64)
+    x320 += einsum(t2[np.ix_(so,so,sv,sV)], (0, 1, 2, 3), x319, (4, 5, 1, 6), (4, 3, 0, 5, 2, 6)) * -1.0
+    del x319
+    t3new += einsum(x320, (0, 1, 2, 3, 4, 5), (3, 2, 0, 5, 4, 1))
+    t3new += einsum(x320, (0, 1, 2, 3, 4, 5), (3, 2, 0, 4, 5, 1)) * -1.0
+    t3new += einsum(x320, (0, 1, 2, 3, 4, 5), (2, 3, 0, 5, 4, 1)) * -1.0
+    t3new += einsum(x320, (0, 1, 2, 3, 4, 5), (2, 3, 0, 4, 5, 1))
+    del x320
+    x321 = np.zeros((naocc, navir, nocc, nocc), dtype=np.float64)
+    x321 += einsum(t2[np.ix_(so,so,sv,sV)], (0, 1, 2, 3), x318, (4, 1, 5, 2), (4, 3, 0, 5)) * -1.0
+    x322 = np.zeros((naocc, navir, nocc, nocc, nvir, nvir), dtype=np.float64)
+    x322 += einsum(t2[np.ix_(so,so,sv,sv)], (0, 1, 2, 3), x321, (4, 5, 6, 1), (4, 5, 6, 0, 2, 3)) * -1.0
+    del x321
+    t3new += einsum(x322, (0, 1, 2, 3, 4, 5), (3, 2, 0, 5, 4, 1))
+    t3new += einsum(x322, (0, 1, 2, 3, 4, 5), (2, 3, 0, 5, 4, 1)) * -1.0
+    del x322
+    x323 = np.zeros((naocc, navir, nvir, nvir), dtype=np.float64)
+    x323 += einsum(t2[np.ix_(so,so,sv,sV)], (0, 1, 2, 3), x318, (4, 0, 1, 5), (4, 3, 2, 5)) * -1.0
+    x324 = np.zeros((naocc, navir, nocc, nocc, nvir, nvir), dtype=np.float64)
+    x324 += einsum(t2[np.ix_(so,so,sv,sv)], (0, 1, 2, 3), x323, (4, 5, 6, 3), (4, 5, 0, 1, 6, 2)) * -1.0
+    del x323
+    t3new += einsum(x324, (0, 1, 2, 3, 4, 5), (2, 3, 0, 5, 4, 1)) * 0.5
+    t3new += einsum(x324, (0, 1, 2, 3, 4, 5), (2, 3, 0, 4, 5, 1)) * -0.5
+    del x324
+    x325 = np.zeros((naocc, nvir, nvir, nvir), dtype=np.float64)
+    x325 += einsum(t2[np.ix_(so,so,sv,sv)], (0, 1, 2, 3), x318, (4, 0, 1, 5), (4, 2, 3, 5))
+    t3new += einsum(t2[np.ix_(so,so,sv,sV)], (0, 1, 2, 3), x325, (4, 5, 6, 2), (0, 1, 4, 5, 6, 3)) * -0.5
+    del x325
+    x326 = np.zeros((naocc, navir, nocc, nocc, nocc, nvir), dtype=np.float64)
+    x326 += einsum(t2[np.ix_(so,sO,sv,sV)], (0, 1, 2, 3), x46, (4, 5, 6, 0), (1, 3, 4, 5, 6, 2))
+    del x46
+    x327 = np.zeros((naocc, navir, nocc, nocc, nvir, nvir), dtype=np.float64)
+    x327 += einsum(t1[np.ix_(so,sv)], (0, 1), x326, (2, 3, 4, 5, 0, 6), (2, 3, 5, 4, 1, 6)) * -1.0
+    del x326
+    t3new += einsum(x327, (0, 1, 2, 3, 4, 5), (2, 3, 0, 4, 5, 1))
+    t3new += einsum(x327, (0, 1, 2, 3, 4, 5), (2, 3, 0, 5, 4, 1)) * -1.0
+    del x327
+    x328 = np.zeros((naocc, navir, nocc, nocc, nocc, nvir), dtype=np.float64)
+    x328 += einsum(t1[np.ix_(so,sv)], (0, 1), x281, (2, 3, 4, 5, 6, 0), (2, 3, 4, 5, 6, 1))
+    del x281
+    x329 = np.zeros((naocc, navir, nocc, nocc, nvir, nvir), dtype=np.float64)
+    x329 += einsum(t1[np.ix_(so,sv)], (0, 1), x328, (2, 3, 4, 5, 0, 6), (2, 3, 4, 5, 6, 1)) * -1.0
+    del x328
+    t3new += einsum(x329, (0, 1, 2, 3, 4, 5), (2, 3, 0, 5, 4, 1)) * -1.0
+    t3new += einsum(x329, (0, 1, 2, 3, 4, 5), (3, 2, 0, 5, 4, 1))
+    del x329
+    x330 = np.zeros((navir, nocc, nocc, nvir), dtype=np.float64)
+    x330 += einsum(t1[np.ix_(so,sv)], (0, 1), x310, (2, 3, 1, 4), (2, 0, 3, 4)) * -1.0
+    del x310
+    x331 = np.zeros((navir, nocc, nocc, nocc), dtype=np.float64)
+    x331 += einsum(t1[np.ix_(so,sv)], (0, 1), x330, (2, 3, 4, 1), (2, 3, 0, 4)) * -1.0
+    t3new += einsum(t2[np.ix_(so,sO,sv,sv)], (0, 1, 2, 3), x331, (4, 5, 6, 0), (5, 6, 1, 2, 3, 4)) * -1.0
+    del x331
+    x332 = np.zeros((naocc, navir, nocc, nocc, nocc, nvir), dtype=np.float64)
+    x332 += einsum(t2[np.ix_(so,sO,sv,sv)], (0, 1, 2, 3), x330, (4, 5, 6, 3), (1, 4, 5, 0, 6, 2))
+    del x330
+    x333 = np.zeros((naocc, navir, nocc, nocc, nvir, nvir), dtype=np.float64)
+    x333 += einsum(t1[np.ix_(so,sv)], (0, 1), x332, (2, 3, 4, 5, 0, 6), (2, 3, 4, 5, 1, 6)) * -1.0
+    del x332
+    t3new += einsum(x333, (0, 1, 2, 3, 4, 5), (2, 3, 0, 4, 5, 1))
+    t3new += einsum(x333, (0, 1, 2, 3, 4, 5), (2, 3, 0, 5, 4, 1)) * -1.0
+    t3new += einsum(x333, (0, 1, 2, 3, 4, 5), (3, 2, 0, 4, 5, 1)) * -1.0
+    t3new += einsum(x333, (0, 1, 2, 3, 4, 5), (3, 2, 0, 5, 4, 1))
+    del x333
+    x334 = np.zeros((naocc, nocc, nocc, nocc), dtype=np.float64)
+    x334 += einsum(t1[np.ix_(so,sv)], (0, 1), x318, (2, 3, 4, 1), (2, 0, 4, 3))
+    x335 = np.zeros((naocc, nocc, nocc, nvir), dtype=np.float64)
+    x335 += einsum(t1[np.ix_(so,sv)], (0, 1), x334, (2, 3, 0, 4), (2, 3, 4, 1)) * -1.0
+    del x334
+    x336 = np.zeros((naocc, navir, nocc, nocc, nvir, nvir), dtype=np.float64)
+    x336 += einsum(t2[np.ix_(so,so,sv,sV)], (0, 1, 2, 3), x335, (4, 5, 1, 6), (4, 3, 5, 0, 6, 2))
+    del x335
+    t3new += einsum(x336, (0, 1, 2, 3, 4, 5), (2, 3, 0, 4, 5, 1))
+    t3new += einsum(x336, (0, 1, 2, 3, 4, 5), (2, 3, 0, 5, 4, 1)) * -1.0
+    t3new += einsum(x336, (0, 1, 2, 3, 4, 5), (3, 2, 0, 4, 5, 1)) * -1.0
+    t3new += einsum(x336, (0, 1, 2, 3, 4, 5), (3, 2, 0, 5, 4, 1))
+    del x336
+    x337 = np.zeros((naocc, navir, nocc, nocc, nocc, nocc), dtype=np.float64)
+    x337 += einsum(t2[np.ix_(so,so,sv,sV)], (0, 1, 2, 3), x318, (4, 5, 6, 2), (4, 3, 0, 1, 6, 5)) * -1.0
+    del x318
+    x338 = np.zeros((naocc, navir, nocc, nocc, nocc, nvir), dtype=np.float64)
+    x338 += einsum(t1[np.ix_(so,sv)], (0, 1), x337, (2, 3, 4, 5, 6, 0), (2, 3, 4, 5, 6, 1))
+    del x337
+    t3new += einsum(t1[np.ix_(so,sv)], (0, 1), x338, (2, 3, 4, 5, 0, 6), (4, 5, 2, 1, 6, 3)) * -1.0
+    del x338
+    x339 = np.zeros((naocc, navir, nocc, nvir), dtype=np.float64)
+    x339 += einsum(t1[np.ix_(so,sV)], (0, 1), t1[np.ix_(sO,sv)], (2, 3), v.oovv, (4, 0, 5, 3), (2, 1, 4, 5))
+    x340 = np.zeros((naocc, navir, nocc, nocc), dtype=np.float64)
+    x340 += einsum(t1[np.ix_(so,sv)], (0, 1), x339, (2, 3, 4, 1), (2, 3, 0, 4)) * -1.0
+    x341 = np.zeros((naocc, navir, nocc, nocc, nvir, nvir), dtype=np.float64)
+    x341 += einsum(t2[np.ix_(so,so,sv,sv)], (0, 1, 2, 3), x340, (4, 5, 6, 1), (4, 5, 6, 0, 2, 3)) * -1.0
+    del x340
+    t3new += einsum(x341, (0, 1, 2, 3, 4, 5), (2, 3, 0, 5, 4, 1))
+    t3new += einsum(x341, (0, 1, 2, 3, 4, 5), (3, 2, 0, 5, 4, 1)) * -1.0
+    del x341
+    x342 = np.zeros((naocc, navir, nocc, nocc, nocc, nvir), dtype=np.float64)
+    x342 += einsum(t2[np.ix_(so,so,sv,sv)], (0, 1, 2, 3), x339, (4, 5, 6, 3), (4, 5, 0, 1, 6, 2)) * -1.0
+    del x339
+    x343 = np.zeros((naocc, navir, nocc, nocc, nvir, nvir), dtype=np.float64)
+    x343 += einsum(t1[np.ix_(so,sv)], (0, 1), x342, (2, 3, 4, 5, 0, 6), (2, 3, 4, 5, 1, 6)) * -1.0
+    del x342
+    t3new += einsum(x343, (0, 1, 2, 3, 4, 5), (2, 3, 0, 4, 5, 1)) * -1.0
+    t3new += einsum(x343, (0, 1, 2, 3, 4, 5), (2, 3, 0, 5, 4, 1))
+    del x343
+
+    return {"t1new": t1new, "t2new": t2new, "t3new": t3new}
+
diff --git a/ebcc/codegen/RCCSDt.py b/ebcc/codegen/RCCSDt.py
new file mode 100644
index 00000000..16560f96
--- /dev/null
+++ b/ebcc/codegen/RCCSDt.py
@@ -0,0 +1,3123 @@
+# Code generated for ebcc.
+
+from ebcc import numpy as np
+from ebcc.util import pack_2e, einsum, Namespace
+from ebcc.precision import types
+
+def energy(f=None, v=None, nocc=None, nvir=None, t1=None, t2=None, t3=None, **kwargs):
+    # energy
+    x0 = np.zeros((nocc, nocc, nvir, nvir), dtype=np.float64)
+    x0 += einsum(v.ovov, (0, 1, 2, 3), (0, 2, 3, 1)) * -0.5
+    x0 += einsum(v.ovov, (0, 1, 2, 3), (0, 2, 1, 3))
+    e_cc = 0
+    e_cc += einsum(t2, (0, 1, 2, 3), x0, (0, 1, 2, 3), ()) * 2.0
+    del x0
+    x1 = np.zeros((nocc, nocc, nvir, nvir), dtype=np.float64)
+    x1 += einsum(v.ovov, (0, 1, 2, 3), (0, 2, 3, 1))
+    x1 += einsum(v.ovov, (0, 1, 2, 3), (0, 2, 1, 3)) * -0.5
+    x2 = np.zeros((nocc, nvir), dtype=np.float64)
+    x2 += einsum(f.ov, (0, 1), (0, 1))
+    x2 += einsum(t1, (0, 1), x1, (0, 2, 3, 1), (2, 3))
+    del x1
+    e_cc += einsum(t1, (0, 1), x2, (0, 1), ()) * 2.0
+    del x2
+
+    return e_cc
+
+def update_amps(f=None, v=None, space=None, t1=None, t2=None, t3=None, **kwargs):
+    nocc = space.ncocc
+    nvir = space.ncvir
+    naocc = space.naocc
+    navir = space.navir
+    so = np.ones((nocc,), dtype=bool)
+    sv = np.ones((nvir,), dtype=bool)
+    sO = space.active[space.correlated][space.occupied[space.correlated]]
+    sV = space.active[space.correlated][space.virtual[space.correlated]]
+
+    # T amplitudes
+    t1new = np.zeros((nocc, nvir), dtype=np.float64)
+    t1new[np.ix_(so,sv)] += einsum(f.ov, (0, 1), (0, 1))
+    t1new[np.ix_(so,sv)] += einsum(f.oo, (0, 1), t1[np.ix_(so,sv)], (1, 2), (0, 2)) * -1.0
+    t1new[np.ix_(so,sv)] += einsum(f.vv, (0, 1), t1[np.ix_(so,sv)], (2, 1), (2, 0))
+    t1new[np.ix_(so,sv)] += einsum(f.ov, (0, 1), t2[np.ix_(so,so,sv,sv)], (2, 0, 3, 1), (2, 3)) * 2.0
+    t1new[np.ix_(so,sv)] += einsum(f.ov, (0, 1), t2[np.ix_(so,so,sv,sv)], (2, 0, 1, 3), (2, 3)) * -1.0
+    t1new[np.ix_(so,sv)] += einsum(t1[np.ix_(so,sv)], (0, 1), v.oovv, (2, 0, 3, 1), (2, 3)) * -1.0
+    t1new[np.ix_(so,sv)] += einsum(t2[np.ix_(so,so,sv,sv)], (0, 1, 2, 3), v.ovvv, (1, 2, 4, 3), (0, 4)) * -1.0
+    t1new[np.ix_(so,sv)] += einsum(v.ovOV, (0, 1, 2, 3), t3[np.ix_(so,so,sO,sv,sv,sV)], (4, 0, 2, 5, 1, 3), (4, 5)) * 0.5
+    t1new[np.ix_(so,sv)] += einsum(v.oVvO, (0, 1, 2, 3), t3[np.ix_(so,so,sO,sv,sv,sV)], (4, 0, 3, 5, 2, 1), (4, 5)) * -0.5
+    t1new[np.ix_(so,sv)] += einsum(v.ovOV, (0, 1, 2, 3), t3[np.ix_(so,so,sO,sv,sv,sV)], (4, 0, 2, 1, 5, 3), (4, 5)) * -0.25
+    t1new[np.ix_(so,sv)] += einsum(v.oVvO, (0, 1, 2, 3), t3[np.ix_(so,so,sO,sv,sv,sV)], (4, 0, 3, 2, 5, 1), (4, 5)) * 0.25
+    t1new[np.ix_(so,sv)] += einsum(v.ovOV, (0, 1, 2, 3), t3[np.ix_(so,so,sO,sv,sv,sV)], (4, 0, 2, 5, 1, 3), (4, 5))
+    t1new[np.ix_(so,sv)] += einsum(v.ovOV, (0, 1, 2, 3), t3[np.ix_(so,so,sO,sv,sv,sV)], (0, 4, 2, 1, 5, 3), (4, 5)) * 0.25
+    t1new[np.ix_(so,sv)] += einsum(v.oVvO, (0, 1, 2, 3), t3[np.ix_(so,so,sO,sv,sv,sV)], (0, 4, 3, 2, 5, 1), (4, 5)) * -0.25
+    t2new = np.zeros((nocc, nocc, nvir, nvir), dtype=np.float64)
+    t2new[np.ix_(so,so,sv,sv)] += einsum(v.ovov, (0, 1, 2, 3), (0, 2, 1, 3))
+    t2new[np.ix_(so,so,sv,sv)] += einsum(t2[np.ix_(so,so,sv,sv)], (0, 1, 2, 3), v.oooo, (4, 1, 5, 0), (4, 5, 3, 2))
+    t2new[np.ix_(so,so,sv,sv)] += einsum(t2[np.ix_(so,so,sv,sv)], (0, 1, 2, 3), v.vvvv, (4, 2, 5, 3), (0, 1, 4, 5))
+    t3new = np.zeros((nocc, nocc, naocc, nvir, nvir, navir), dtype=np.float64)
+    t3new += einsum(f.oo, (0, 1), t3[np.ix_(so,so,sO,sv,sv,sV)], (1, 2, 3, 4, 5, 6), (0, 2, 3, 4, 5, 6)) * -1.0
+    t3new += einsum(f.oo, (0, 1), t3[np.ix_(so,so,sO,sv,sv,sV)], (2, 1, 3, 4, 5, 6), (2, 0, 3, 4, 5, 6)) * -1.0
+    t3new += einsum(f.OO, (0, 1), t3[np.ix_(so,so,sO,sv,sv,sV)], (2, 3, 1, 4, 5, 6), (2, 3, 0, 4, 5, 6)) * -1.0
+    t3new += einsum(f.vv, (0, 1), t3[np.ix_(so,so,sO,sv,sv,sV)], (2, 3, 4, 1, 5, 6), (2, 3, 4, 0, 5, 6))
+    t3new += einsum(f.vv, (0, 1), t3[np.ix_(so,so,sO,sv,sv,sV)], (2, 3, 4, 5, 1, 6), (2, 3, 4, 5, 0, 6))
+    t3new += einsum(f.VV, (0, 1), t3[np.ix_(so,so,sO,sv,sv,sV)], (2, 3, 4, 5, 6, 1), (2, 3, 4, 5, 6, 0))
+    t3new += einsum(t2[np.ix_(so,so,sv,sV)], (0, 1, 2, 3), v.oovO, (4, 1, 5, 6), (4, 0, 6, 5, 2, 3))
+    t3new += einsum(t2[np.ix_(so,so,sv,sV)], (0, 1, 2, 3), v.oovO, (4, 0, 5, 6), (1, 4, 6, 5, 2, 3))
+    t3new += einsum(t2[np.ix_(so,so,sv,sV)], (0, 1, 2, 3), v.ovoO, (4, 5, 0, 6), (1, 4, 6, 2, 5, 3))
+    t3new += einsum(t2[np.ix_(so,so,sv,sv)], (0, 1, 2, 3), v.oOoV, (1, 4, 5, 6), (5, 0, 4, 3, 2, 6))
+    t3new += einsum(t2[np.ix_(so,sO,sv,sv)], (0, 1, 2, 3), v.oooV, (4, 0, 5, 6), (5, 4, 1, 3, 2, 6))
+    t3new += einsum(t2[np.ix_(so,sO,sv,sv)], (0, 1, 2, 3), v.ovvV, (4, 5, 2, 6), (0, 4, 1, 3, 5, 6)) * -1.0
+    t3new += einsum(t2[np.ix_(so,sO,sv,sv)], (0, 1, 2, 3), v.oVvv, (4, 5, 6, 3), (4, 0, 1, 6, 2, 5)) * -1.0
+    t3new += einsum(t2[np.ix_(so,sO,sv,sv)], (0, 1, 2, 3), v.oVvv, (4, 5, 6, 2), (4, 0, 1, 3, 6, 5)) * -1.0
+    t3new += einsum(t2[np.ix_(so,so,sv,sV)], (0, 1, 2, 3), v.vvvO, (4, 2, 5, 6), (1, 0, 6, 5, 4, 3)) * -1.0
+    t3new += einsum(t2[np.ix_(so,so,sv,sv)], (0, 1, 2, 3), v.vOvV, (4, 5, 2, 6), (0, 1, 5, 4, 3, 6)) * -1.0
+    t3new += einsum(t2[np.ix_(so,sO,sV,sv)], (0, 1, 2, 3), v.ooov, (4, 0, 5, 6), (4, 5, 1, 3, 6, 2))
+    t3new += einsum(v.ooOO, (0, 1, 2, 3), t3[np.ix_(so,so,sO,sv,sv,sV)], (1, 4, 3, 5, 6, 7), (0, 4, 2, 5, 6, 7)) * 0.5
+    t3new += einsum(v.oOoO, (0, 1, 2, 3), t3[np.ix_(so,so,sO,sv,sv,sV)], (2, 4, 1, 5, 6, 7), (0, 4, 3, 5, 6, 7)) * -0.5
+    t3new += einsum(v.ooOO, (0, 1, 2, 3), t3[np.ix_(so,so,sO,sv,sv,sV)], (4, 1, 3, 5, 6, 7), (4, 0, 2, 5, 6, 7))
+    t3new += einsum(v.oooo, (0, 1, 2, 3), t3[np.ix_(so,so,sO,sv,sv,sV)], (1, 3, 4, 5, 6, 7), (0, 2, 4, 5, 6, 7))
+    t3new += einsum(v.oovv, (0, 1, 2, 3), t3[np.ix_(so,so,sO,sv,sv,sV)], (1, 4, 5, 3, 6, 7), (0, 4, 5, 2, 6, 7)) * -1.0
+    t3new += einsum(v.oovv, (0, 1, 2, 3), t3[np.ix_(so,so,sO,sv,sv,sV)], (1, 4, 5, 6, 3, 7), (0, 4, 5, 6, 2, 7)) * -1.0
+    t3new += einsum(v.oovv, (0, 1, 2, 3), t3[np.ix_(so,so,sO,sv,sv,sV)], (4, 1, 5, 3, 6, 7), (4, 0, 5, 2, 6, 7)) * -1.0
+    t3new += einsum(v.oovv, (0, 1, 2, 3), t3[np.ix_(so,so,sO,sv,sv,sV)], (4, 1, 5, 6, 3, 7), (4, 0, 5, 6, 2, 7)) * -1.0
+    t3new += einsum(v.ooVV, (0, 1, 2, 3), t3[np.ix_(so,so,sO,sv,sv,sV)], (1, 4, 5, 6, 7, 3), (0, 4, 5, 6, 7, 2)) * -1.0
+    t3new += einsum(v.ooVV, (0, 1, 2, 3), t3[np.ix_(so,so,sO,sv,sv,sV)], (4, 1, 5, 6, 7, 3), (4, 0, 5, 6, 7, 2)) * -1.0
+    t3new += einsum(v.oVoV, (0, 1, 2, 3), t3[np.ix_(so,so,sO,sv,sv,sV)], (2, 4, 5, 6, 7, 3), (0, 4, 5, 6, 7, 1))
+    t3new += einsum(v.vOvO, (0, 1, 2, 3), t3[np.ix_(so,so,sO,sv,sv,sV)], (4, 5, 3, 2, 6, 7), (4, 5, 1, 0, 6, 7))
+    t3new += einsum(v.vvOO, (0, 1, 2, 3), t3[np.ix_(so,so,sO,sv,sv,sV)], (4, 5, 3, 1, 6, 7), (4, 5, 2, 0, 6, 7)) * -1.0
+    t3new += einsum(v.vvOO, (0, 1, 2, 3), t3[np.ix_(so,so,sO,sv,sv,sV)], (4, 5, 3, 6, 1, 7), (4, 5, 2, 6, 0, 7)) * -1.0
+    t3new += einsum(v.OOVV, (0, 1, 2, 3), t3[np.ix_(so,so,sO,sv,sv,sV)], (4, 5, 1, 6, 7, 3), (4, 5, 0, 6, 7, 2)) * -1.0
+    t3new += einsum(v.vvvv, (0, 1, 2, 3), t3[np.ix_(so,so,sO,sv,sv,sV)], (4, 5, 6, 1, 3, 7), (4, 5, 6, 0, 2, 7))
+    t3new += einsum(v.vvVV, (0, 1, 2, 3), t3[np.ix_(so,so,sO,sv,sv,sV)], (4, 5, 6, 1, 7, 3), (4, 5, 6, 0, 7, 2)) * 0.5
+    t3new += einsum(v.vVvV, (0, 1, 2, 3), t3[np.ix_(so,so,sO,sv,sv,sV)], (4, 5, 6, 2, 7, 1), (4, 5, 6, 0, 7, 3)) * -0.5
+    t3new += einsum(v.vvVV, (0, 1, 2, 3), t3[np.ix_(so,so,sO,sv,sv,sV)], (4, 5, 6, 7, 1, 3), (4, 5, 6, 7, 0, 2))
+    t3new += einsum(v.ovoV, (0, 1, 2, 3), t3[np.ix_(so,so,sO,sv,sV,sV)], (4, 2, 5, 6, 7, 3), (4, 0, 5, 6, 1, 7)) * -1.0
+    t3new += einsum(v.vOOV, (0, 1, 2, 3), t3[np.ix_(so,so,sO,sv,sV,sV)], (4, 5, 2, 6, 7, 3), (5, 4, 1, 0, 6, 7)) * -1.0
+    t3new += einsum(v.oVOV, (0, 1, 2, 3), t3[np.ix_(so,sO,sO,sv,sv,sV)], (4, 5, 2, 6, 7, 3), (0, 4, 5, 7, 6, 1)) * -1.0
+    t3new += einsum(v.ovOV, (0, 1, 2, 3), t3[np.ix_(so,sO,sO,sv,sV,sV)], (4, 5, 2, 6, 7, 3), (0, 4, 5, 1, 6, 7))
+    x0 = np.zeros((nocc, nvir), dtype=np.float64)
+    x0 += einsum(t1[np.ix_(so,sv)], (0, 1), v.ovov, (2, 3, 0, 1), (2, 3))
+    t1new[np.ix_(so,sv)] += einsum(x0, (0, 1), (0, 1)) * 2.0
+    t1new[np.ix_(so,sv)] += einsum(x0, (0, 1), t2[np.ix_(so,so,sv,sv)], (2, 0, 3, 1), (2, 3)) * 4.0
+    t1new[np.ix_(so,sv)] += einsum(x0, (0, 1), t2[np.ix_(so,so,sv,sv)], (2, 0, 1, 3), (2, 3)) * -2.0
+    x1 = np.zeros((nocc, nvir), dtype=np.float64)
+    x1 += einsum(t2[np.ix_(so,so,sv,sv)], (0, 1, 2, 3), v.ooov, (4, 0, 1, 3), (4, 2))
+    t1new[np.ix_(so,sv)] += einsum(x1, (0, 1), (0, 1)) * -1.5
+    t1new[np.ix_(so,sv)] += einsum(x1, (0, 1), (0, 1)) * -0.5
+    del x1
+    x2 = np.zeros((nocc, nvir), dtype=np.float64)
+    x2 += einsum(t2[np.ix_(so,so,sv,sv)], (0, 1, 2, 3), v.ooov, (4, 0, 1, 2), (4, 3))
+    t1new[np.ix_(so,sv)] += einsum(x2, (0, 1), (0, 1)) * 0.5
+    t1new[np.ix_(so,sv)] += einsum(x2, (0, 1), (0, 1)) * 0.5
+    del x2
+    x3 = np.zeros((nocc, nvir), dtype=np.float64)
+    x3 += einsum(t2[np.ix_(so,so,sv,sv)], (0, 1, 2, 3), v.ovvv, (1, 3, 4, 2), (0, 4))
+    t1new[np.ix_(so,sv)] += einsum(x3, (0, 1), (0, 1))
+    t1new[np.ix_(so,sv)] += einsum(x3, (0, 1), (0, 1))
+    del x3
+    x4 = np.zeros((nocc, nocc), dtype=np.float64)
+    x4 += einsum(f.ov, (0, 1), t1[np.ix_(so,sv)], (2, 1), (0, 2))
+    t1new[np.ix_(so,sv)] += einsum(t1[np.ix_(so,sv)], (0, 1), x4, (0, 2), (2, 1)) * -1.0
+    t3new += einsum(x4, (0, 1), t3[np.ix_(so,so,sO,sv,sv,sV)], (0, 2, 3, 4, 5, 6), (1, 2, 3, 4, 5, 6)) * -1.0
+    t3new += einsum(x4, (0, 1), t3[np.ix_(so,so,sO,sv,sv,sV)], (2, 0, 3, 4, 5, 6), (2, 1, 3, 4, 5, 6)) * -1.0
+    x5 = np.zeros((nocc, nocc), dtype=np.float64)
+    x5 += einsum(t1[np.ix_(so,sv)], (0, 1), v.ooov, (2, 0, 3, 1), (2, 3))
+    t1new[np.ix_(so,sv)] += einsum(t1[np.ix_(so,sv)], (0, 1), x5, (2, 0), (2, 1))
+    t3new += einsum(x5, (0, 1), t3[np.ix_(so,so,sO,sv,sv,sV)], (1, 2, 3, 4, 5, 6), (0, 2, 3, 4, 5, 6))
+    t3new += einsum(x5, (0, 1), t3[np.ix_(so,so,sO,sv,sv,sV)], (2, 1, 3, 4, 5, 6), (2, 0, 3, 4, 5, 6))
+    x6 = np.zeros((nocc, nocc), dtype=np.float64)
+    x6 += einsum(t1[np.ix_(so,sv)], (0, 1), v.ooov, (2, 3, 0, 1), (2, 3))
+    t1new[np.ix_(so,sv)] += einsum(t1[np.ix_(so,sv)], (0, 1), x6, (2, 0), (2, 1)) * -2.0
+    t3new += einsum(x6, (0, 1), t3[np.ix_(so,so,sO,sv,sv,sV)], (1, 2, 3, 4, 5, 6), (0, 2, 3, 4, 5, 6)) * -2.0
+    t3new += einsum(x6, (0, 1), t3[np.ix_(so,so,sO,sv,sv,sV)], (2, 1, 3, 4, 5, 6), (2, 0, 3, 4, 5, 6)) * -2.0
+    x7 = np.zeros((nvir, nvir), dtype=np.float64)
+    x7 += einsum(t1[np.ix_(so,sv)], (0, 1), v.ovvv, (0, 2, 3, 1), (2, 3))
+    t1new[np.ix_(so,sv)] += einsum(t1[np.ix_(so,sv)], (0, 1), x7, (1, 2), (0, 2)) * -1.0
+    t3new += einsum(x7, (0, 1), t3[np.ix_(so,so,sO,sv,sv,sV)], (2, 3, 4, 0, 5, 6), (2, 3, 4, 1, 5, 6)) * -1.0
+    t3new += einsum(x7, (0, 1), t3[np.ix_(so,so,sO,sv,sv,sV)], (2, 3, 4, 5, 0, 6), (2, 3, 4, 5, 1, 6)) * -1.0
+    x8 = np.zeros((nvir, nvir), dtype=np.float64)
+    x8 += einsum(t1[np.ix_(so,sv)], (0, 1), v.ovvv, (0, 1, 2, 3), (2, 3))
+    t1new[np.ix_(so,sv)] += einsum(t1[np.ix_(so,sv)], (0, 1), x8, (2, 1), (0, 2)) * 2.0
+    t3new += einsum(x8, (0, 1), t3[np.ix_(so,so,sO,sv,sv,sV)], (2, 3, 4, 1, 5, 6), (2, 3, 4, 0, 5, 6)) * 2.0
+    t3new += einsum(x8, (0, 1), t3[np.ix_(so,so,sO,sv,sv,sV)], (2, 3, 4, 5, 1, 6), (2, 3, 4, 5, 0, 6)) * 2.0
+    x9 = np.zeros((nocc, nocc, nocc, nvir), dtype=np.float64)
+    x9 += einsum(t1[np.ix_(so,sv)], (0, 1), v.ovov, (2, 3, 4, 1), (0, 2, 4, 3))
+    t3new += einsum(t2[np.ix_(so,sO,sV,sv)], (0, 1, 2, 3), x9, (4, 5, 0, 6), (4, 5, 1, 3, 6, 2))
+    x10 = np.zeros((nocc, nvir), dtype=np.float64)
+    x10 += einsum(t2[np.ix_(so,so,sv,sv)], (0, 1, 2, 3), x9, (4, 0, 1, 2), (4, 3))
+    t1new[np.ix_(so,sv)] += einsum(x10, (0, 1), (0, 1)) * -1.5
+    t1new[np.ix_(so,sv)] += einsum(x10, (0, 1), (0, 1)) * -0.5
+    del x10
+    x11 = np.zeros((nocc, nvir), dtype=np.float64)
+    x11 += einsum(t2[np.ix_(so,so,sv,sv)], (0, 1, 2, 3), x9, (4, 0, 1, 3), (4, 2))
+    t1new[np.ix_(so,sv)] += einsum(x11, (0, 1), (0, 1)) * 0.5
+    t1new[np.ix_(so,sv)] += einsum(x11, (0, 1), (0, 1)) * 0.5
+    del x11
+    x12 = np.zeros((nocc, nocc), dtype=np.float64)
+    x12 += einsum(t2[np.ix_(so,so,sv,sv)], (0, 1, 2, 3), v.ovov, (4, 2, 1, 3), (0, 4))
+    t3new += einsum(x12, (0, 1), t3[np.ix_(so,so,sO,sv,sv,sV)], (2, 1, 3, 4, 5, 6), (2, 0, 3, 4, 5, 6)) * -2.0
+    x13 = np.zeros((nocc, nvir), dtype=np.float64)
+    x13 += einsum(t1[np.ix_(so,sv)], (0, 1), x12, (2, 0), (2, 1))
+    t1new[np.ix_(so,sv)] += einsum(x13, (0, 1), (0, 1)) * -1.0
+    t1new[np.ix_(so,sv)] += einsum(x13, (0, 1), (0, 1)) * -1.0
+    del x13
+    x14 = np.zeros((nocc, nocc), dtype=np.float64)
+    x14 += einsum(t2[np.ix_(so,so,sv,sv)], (0, 1, 2, 3), v.ovov, (4, 3, 1, 2), (0, 4))
+    t1new[np.ix_(so,sv)] += einsum(t1[np.ix_(so,sv)], (0, 1), x14, (2, 0), (2, 1))
+    t3new += einsum(x14, (0, 1), t3[np.ix_(so,so,sO,sv,sv,sV)], (1, 2, 3, 4, 5, 6), (0, 2, 3, 4, 5, 6))
+    t3new += einsum(x14, (0, 1), t3[np.ix_(so,so,sO,sv,sv,sV)], (2, 1, 3, 4, 5, 6), (2, 0, 3, 4, 5, 6))
+    x15 = np.zeros((nocc, nvir), dtype=np.float64)
+    x15 += einsum(t1[np.ix_(so,sv)], (0, 1), v.ovov, (2, 1, 0, 3), (2, 3))
+    t1new[np.ix_(so,sv)] += einsum(x15, (0, 1), t2[np.ix_(so,so,sv,sv)], (2, 0, 3, 1), (2, 3)) * -2.0
+    t1new[np.ix_(so,sv)] += einsum(x15, (0, 1), t2[np.ix_(so,so,sv,sv)], (2, 0, 1, 3), (2, 3))
+    x16 = np.zeros((nocc, nocc), dtype=np.float64)
+    x16 += einsum(t1[np.ix_(so,sv)], (0, 1), x15, (2, 1), (0, 2))
+    t1new[np.ix_(so,sv)] += einsum(t1[np.ix_(so,sv)], (0, 1), x16, (2, 0), (2, 1))
+    t3new += einsum(x16, (0, 1), t3[np.ix_(so,so,sO,sv,sv,sV)], (1, 2, 3, 4, 5, 6), (0, 2, 3, 4, 5, 6))
+    t3new += einsum(x16, (0, 1), t3[np.ix_(so,so,sO,sv,sv,sV)], (2, 1, 3, 4, 5, 6), (2, 0, 3, 4, 5, 6))
+    x17 = np.zeros((nocc, nocc), dtype=np.float64)
+    x17 += einsum(t1[np.ix_(so,sv)], (0, 1), x0, (2, 1), (0, 2))
+    t1new[np.ix_(so,sv)] += einsum(t1[np.ix_(so,sv)], (0, 1), x17, (2, 0), (2, 1)) * -2.0
+    t3new += einsum(x17, (0, 1), t3[np.ix_(so,so,sO,sv,sv,sV)], (1, 2, 3, 4, 5, 6), (0, 2, 3, 4, 5, 6)) * -2.0
+    t3new += einsum(x17, (0, 1), t3[np.ix_(so,so,sO,sv,sv,sV)], (2, 1, 3, 4, 5, 6), (2, 0, 3, 4, 5, 6)) * -2.0
+    x18 = np.zeros((nocc, nocc, nvir, nvir), dtype=np.float64)
+    x18 += einsum(f.oo, (0, 1), t2[np.ix_(so,so,sv,sv)], (2, 1, 3, 4), (0, 2, 3, 4))
+    t2new[np.ix_(so,so,sv,sv)] += einsum(x18, (0, 1, 2, 3), (0, 1, 3, 2)) * -1.0
+    t2new[np.ix_(so,so,sv,sv)] += einsum(x18, (0, 1, 2, 3), (1, 0, 2, 3)) * -1.0
+    del x18
+    x19 = np.zeros((nocc, nocc, nvir, nvir), dtype=np.float64)
+    x19 += einsum(f.vv, (0, 1), t2[np.ix_(so,so,sv,sv)], (2, 3, 4, 1), (2, 3, 0, 4))
+    t2new[np.ix_(so,so,sv,sv)] += einsum(x19, (0, 1, 2, 3), (1, 0, 2, 3))
+    t2new[np.ix_(so,so,sv,sv)] += einsum(x19, (0, 1, 2, 3), (0, 1, 3, 2))
+    del x19
+    x20 = np.zeros((nocc, nocc, nvir, nvir), dtype=np.float64)
+    x20 += einsum(t1[np.ix_(so,sv)], (0, 1), v.ooov, (2, 0, 3, 4), (2, 3, 1, 4))
+    t2new[np.ix_(so,so,sv,sv)] += einsum(x20, (0, 1, 2, 3), (0, 1, 2, 3)) * -1.0
+    t2new[np.ix_(so,so,sv,sv)] += einsum(x20, (0, 1, 2, 3), (1, 0, 3, 2)) * -1.0
+    del x20
+    x21 = np.zeros((nocc, nocc, nvir, nvir), dtype=np.float64)
+    x21 += einsum(t1[np.ix_(so,sv)], (0, 1), v.ovvv, (2, 3, 4, 1), (0, 2, 3, 4))
+    t2new[np.ix_(so,so,sv,sv)] += einsum(x21, (0, 1, 2, 3), (0, 1, 3, 2))
+    t2new[np.ix_(so,so,sv,sv)] += einsum(x21, (0, 1, 2, 3), (1, 0, 2, 3))
+    t3new += einsum(x21, (0, 1, 2, 3), t3[np.ix_(so,so,sO,sv,sv,sV)], (1, 4, 5, 2, 6, 7), (0, 4, 5, 3, 6, 7))
+    t3new += einsum(x21, (0, 1, 2, 3), t3[np.ix_(so,so,sO,sv,sv,sV)], (4, 1, 5, 2, 6, 7), (4, 0, 5, 6, 3, 7)) * -1.0
+    t3new += einsum(x21, (0, 1, 2, 3), t3[np.ix_(so,so,sO,sv,sv,sV)], (4, 1, 5, 6, 2, 7), (4, 0, 5, 6, 3, 7)) * 2.0
+    x22 = np.zeros((nocc, nocc, nvir, nvir), dtype=np.float64)
+    x22 += einsum(f.OV, (0, 1), t3[np.ix_(so,so,sO,sv,sv,sV)], (2, 3, 0, 4, 5, 1), (2, 3, 4, 5))
+    t2new[np.ix_(so,so,sv,sv)] += einsum(x22, (0, 1, 2, 3), (0, 1, 2, 3))
+    t2new[np.ix_(so,so,sv,sv)] += einsum(x22, (0, 1, 2, 3), (1, 0, 3, 2))
+    del x22
+    x23 = np.zeros((nocc, nocc, nvir, nvir), dtype=np.float64)
+    x23 += einsum(t2[np.ix_(so,so,sv,sv)], (0, 1, 2, 3), v.oovv, (4, 1, 5, 3), (0, 4, 2, 5))
+    t2new[np.ix_(so,so,sv,sv)] += einsum(x23, (0, 1, 2, 3), (0, 1, 2, 3)) * -1.0
+    t2new[np.ix_(so,so,sv,sv)] += einsum(x23, (0, 1, 2, 3), (1, 0, 3, 2)) * -1.0
+    del x23
+    x24 = np.zeros((nocc, nocc, nvir, nvir), dtype=np.float64)
+    x24 += einsum(t2[np.ix_(so,so,sv,sv)], (0, 1, 2, 3), v.oovv, (4, 1, 5, 2), (0, 4, 3, 5))
+    t2new[np.ix_(so,so,sv,sv)] += einsum(x24, (0, 1, 2, 3), (0, 1, 3, 2)) * -1.0
+    t2new[np.ix_(so,so,sv,sv)] += einsum(x24, (0, 1, 2, 3), (1, 0, 2, 3)) * -1.0
+    del x24
+    x25 = np.zeros((nocc, nocc, nvir, nvir), dtype=np.float64)
+    x25 += einsum(t2[np.ix_(so,so,sv,sv)], (0, 1, 2, 3), v.ovov, (4, 5, 1, 3), (0, 4, 2, 5))
+    t2new[np.ix_(so,so,sv,sv)] += einsum(x25, (0, 1, 2, 3), (0, 1, 2, 3)) * 2.0
+    t2new[np.ix_(so,so,sv,sv)] += einsum(x25, (0, 1, 2, 3), (1, 0, 3, 2)) * 2.0
+    t2new[np.ix_(so,so,sv,sv)] += einsum(t2[np.ix_(so,so,sv,sv)], (0, 1, 2, 3), x25, (4, 1, 5, 3), (4, 0, 5, 2)) * 4.0
+    del x25
+    x26 = np.zeros((nocc, nocc, nvir, nvir), dtype=np.float64)
+    x26 += einsum(t2[np.ix_(so,so,sv,sv)], (0, 1, 2, 3), v.ovov, (4, 5, 1, 2), (0, 4, 3, 5))
+    t2new[np.ix_(so,so,sv,sv)] += einsum(x26, (0, 1, 2, 3), (0, 1, 2, 3)) * -1.0
+    t2new[np.ix_(so,so,sv,sv)] += einsum(x26, (0, 1, 2, 3), (1, 0, 3, 2)) * -1.0
+    t2new[np.ix_(so,so,sv,sv)] += einsum(t2[np.ix_(so,so,sv,sv)], (0, 1, 2, 3), x26, (4, 1, 5, 2), (4, 0, 5, 3))
+    x27 = np.zeros((nocc, nocc, nvir, nvir), dtype=np.float64)
+    x27 += einsum(v.ooOV, (0, 1, 2, 3), t3[np.ix_(so,so,sO,sv,sv,sV)], (4, 1, 2, 5, 6, 3), (4, 0, 5, 6))
+    t2new[np.ix_(so,so,sv,sv)] += einsum(x27, (0, 1, 2, 3), (1, 0, 3, 2)) * -1.0
+    t2new[np.ix_(so,so,sv,sv)] += einsum(x27, (0, 1, 2, 3), (0, 1, 2, 3)) * -1.0
+    del x27
+    x28 = np.zeros((nocc, nocc, nvir, nvir), dtype=np.float64)
+    x28 += einsum(v.ooOV, (0, 1, 2, 3), t3[np.ix_(so,so,sO,sv,sv,sV)], (1, 4, 2, 5, 6, 3), (4, 0, 5, 6))
+    t2new[np.ix_(so,so,sv,sv)] += einsum(x28, (0, 1, 2, 3), (1, 0, 2, 3)) * -0.5
+    t2new[np.ix_(so,so,sv,sv)] += einsum(x28, (0, 1, 2, 3), (0, 1, 3, 2)) * -0.5
+    del x28
+    x29 = np.zeros((navir, nocc, nocc, nvir), dtype=np.float64)
+    x29 += einsum(v.oovO, (0, 1, 2, 3), t3[np.ix_(so,so,sO,sv,sv,sV)], (1, 4, 3, 2, 5, 6), (6, 4, 0, 5))
+    t2new[np.ix_(so,so,sV,sv)] += einsum(x29, (0, 1, 2, 3), (2, 1, 0, 3)) * 0.5
+    t2new[np.ix_(so,so,sv,sV)] += einsum(x29, (0, 1, 2, 3), (1, 2, 3, 0)) * 0.5
+    del x29
+    x30 = np.zeros((nocc, nocc, nvir, nvir), dtype=np.float64)
+    x30 += einsum(v.vOvV, (0, 1, 2, 3), t3[np.ix_(so,so,sO,sv,sv,sV)], (4, 5, 1, 0, 6, 3), (4, 5, 6, 2))
+    t2new[np.ix_(so,so,sv,sv)] += einsum(x30, (0, 1, 2, 3), (0, 1, 3, 2)) * -0.5
+    t2new[np.ix_(so,so,sv,sv)] += einsum(x30, (0, 1, 2, 3), (1, 0, 2, 3)) * -0.5
+    del x30
+    x31 = np.zeros((nocc, nocc, nvir, nvir), dtype=np.float64)
+    x31 += einsum(v.vvOV, (0, 1, 2, 3), t3[np.ix_(so,so,sO,sv,sv,sV)], (4, 5, 2, 1, 6, 3), (4, 5, 6, 0))
+    t2new[np.ix_(so,so,sv,sv)] += einsum(x31, (0, 1, 2, 3), (0, 1, 3, 2)) * 0.5
+    t2new[np.ix_(so,so,sv,sv)] += einsum(x31, (0, 1, 2, 3), (1, 0, 2, 3)) * 0.5
+    del x31
+    x32 = np.zeros((nocc, nocc, nvir, nvir), dtype=np.float64)
+    x32 += einsum(v.vvOV, (0, 1, 2, 3), t3[np.ix_(so,so,sO,sv,sv,sV)], (4, 5, 2, 6, 1, 3), (4, 5, 6, 0))
+    t2new[np.ix_(so,so,sv,sv)] += einsum(x32, (0, 1, 2, 3), (0, 1, 2, 3))
+    t2new[np.ix_(so,so,sv,sv)] += einsum(x32, (0, 1, 2, 3), (1, 0, 3, 2))
+    del x32
+    x33 = np.zeros((nocc, nocc, nvir, nvir), dtype=np.float64)
+    x33 += einsum(x4, (0, 1), t2[np.ix_(so,so,sv,sv)], (2, 0, 3, 4), (1, 2, 3, 4))
+    del x4
+    t2new[np.ix_(so,so,sv,sv)] += einsum(x33, (0, 1, 2, 3), (0, 1, 3, 2)) * -1.0
+    t2new[np.ix_(so,so,sv,sv)] += einsum(x33, (0, 1, 2, 3), (1, 0, 2, 3)) * -1.0
+    del x33
+    x34 = np.zeros((nocc, nocc, nocc, nvir), dtype=np.float64)
+    x34 += einsum(f.ov, (0, 1), t2[np.ix_(so,so,sv,sv)], (2, 3, 4, 1), (0, 2, 3, 4))
+    t3new += einsum(t2[np.ix_(so,sO,sV,sv)], (0, 1, 2, 3), x34, (0, 4, 5, 6), (5, 4, 1, 3, 6, 2))
+    x35 = np.zeros((nocc, nocc, nvir, nvir), dtype=np.float64)
+    x35 += einsum(t1[np.ix_(so,sv)], (0, 1), x34, (0, 2, 3, 4), (2, 3, 1, 4))
+    t2new[np.ix_(so,so,sv,sv)] += einsum(x35, (0, 1, 2, 3), (1, 0, 2, 3)) * -1.0
+    t2new[np.ix_(so,so,sv,sv)] += einsum(x35, (0, 1, 2, 3), (0, 1, 3, 2)) * -1.0
+    del x35
+    x36 = np.zeros((nocc, nocc, nocc, nvir), dtype=np.float64)
+    x36 += einsum(t1[np.ix_(so,sv)], (0, 1), v.oovv, (2, 3, 4, 1), (0, 2, 3, 4))
+    t3new += einsum(t2[np.ix_(so,sO,sV,sv)], (0, 1, 2, 3), x36, (4, 5, 0, 6), (5, 4, 1, 3, 6, 2))
+    x37 = np.zeros((nocc, nocc, nvir, nvir), dtype=np.float64)
+    x37 += einsum(t1[np.ix_(so,sv)], (0, 1), x36, (2, 3, 0, 4), (2, 3, 1, 4))
+    t2new[np.ix_(so,so,sv,sv)] += einsum(x37, (0, 1, 2, 3), (0, 1, 3, 2)) * -1.0
+    t2new[np.ix_(so,so,sv,sv)] += einsum(x37, (0, 1, 2, 3), (1, 0, 2, 3)) * -1.0
+    del x37
+    x38 = np.zeros((nocc, nocc, nocc, nvir), dtype=np.float64)
+    x38 += einsum(t1[np.ix_(so,sv)], (0, 1), v.oooo, (2, 3, 4, 0), (2, 3, 4, 1))
+    t2new[np.ix_(so,so,sv,sv)] += einsum(t1[np.ix_(so,sv)], (0, 1), x38, (2, 0, 3, 4), (3, 2, 4, 1))
+    del x38
+    x39 = np.zeros((nocc, nocc, nvir, nvir), dtype=np.float64)
+    x39 += einsum(t1[np.ix_(so,sv)], (0, 1), x9, (2, 3, 0, 4), (2, 3, 1, 4))
+    t2new[np.ix_(so,so,sv,sv)] += einsum(x39, (0, 1, 2, 3), (0, 1, 2, 3)) * -1.0
+    t2new[np.ix_(so,so,sv,sv)] += einsum(x39, (0, 1, 2, 3), (1, 0, 3, 2)) * -1.0
+    del x39
+    x40 = np.zeros((nocc, nvir, nvir, nvir), dtype=np.float64)
+    x40 += einsum(t1[np.ix_(so,sv)], (0, 1), v.vvvv, (2, 3, 4, 1), (0, 2, 3, 4))
+    t2new[np.ix_(so,so,sv,sv)] += einsum(t1[np.ix_(so,sv)], (0, 1), x40, (2, 3, 1, 4), (0, 2, 3, 4))
+    del x40
+    x41 = np.zeros((nocc, nocc, nocc, nocc), dtype=np.float64)
+    x41 += einsum(t1[np.ix_(so,sv)], (0, 1), v.ooov, (2, 3, 4, 1), (0, 2, 3, 4))
+    t3new += einsum(x41, (0, 1, 2, 3), t3[np.ix_(so,so,sO,sv,sv,sV)], (3, 2, 4, 5, 6, 7), (0, 1, 4, 5, 6, 7))
+    t3new += einsum(x41, (0, 1, 2, 3), t3[np.ix_(so,so,sO,sv,sv,sV)], (2, 3, 4, 5, 6, 7), (1, 0, 4, 5, 6, 7))
+    x42 = np.zeros((nocc, nocc, nvir, nvir), dtype=np.float64)
+    x42 += einsum(t2[np.ix_(so,so,sv,sv)], (0, 1, 2, 3), x41, (4, 5, 0, 1), (4, 5, 2, 3))
+    t2new[np.ix_(so,so,sv,sv)] += einsum(x42, (0, 1, 2, 3), (0, 1, 3, 2))
+    t2new[np.ix_(so,so,sv,sv)] += einsum(x42, (0, 1, 2, 3), (1, 0, 2, 3))
+    del x42
+    x43 = np.zeros((nocc, nocc, nocc, nvir), dtype=np.float64)
+    x43 += einsum(t2[np.ix_(so,so,sv,sv)], (0, 1, 2, 3), v.ooov, (4, 1, 5, 2), (0, 4, 5, 3))
+    t3new += einsum(t2[np.ix_(so,sO,sV,sv)], (0, 1, 2, 3), x43, (4, 5, 0, 6), (4, 5, 1, 3, 6, 2)) * -1.0
+    x44 = np.zeros((nocc, nocc, nvir, nvir), dtype=np.float64)
+    x44 += einsum(t1[np.ix_(so,sv)], (0, 1), x43, (2, 3, 0, 4), (2, 3, 1, 4))
+    t2new[np.ix_(so,so,sv,sv)] += einsum(x44, (0, 1, 2, 3), (0, 1, 2, 3))
+    t2new[np.ix_(so,so,sv,sv)] += einsum(x44, (0, 1, 2, 3), (1, 0, 3, 2))
+    del x44
+    x45 = np.zeros((nocc, nocc, nocc, nvir), dtype=np.float64)
+    x45 += einsum(t2[np.ix_(so,so,sv,sv)], (0, 1, 2, 3), v.ooov, (4, 5, 1, 3), (0, 4, 5, 2))
+    t3new += einsum(t2[np.ix_(so,sO,sV,sv)], (0, 1, 2, 3), x45, (4, 5, 0, 6), (5, 4, 1, 3, 6, 2)) * 2.0
+    x46 = np.zeros((nocc, nocc, nvir, nvir), dtype=np.float64)
+    x46 += einsum(t1[np.ix_(so,sv)], (0, 1), x45, (2, 3, 0, 4), (2, 3, 1, 4))
+    t2new[np.ix_(so,so,sv,sv)] += einsum(x46, (0, 1, 2, 3), (1, 0, 2, 3)) * -2.0
+    t2new[np.ix_(so,so,sv,sv)] += einsum(x46, (0, 1, 2, 3), (0, 1, 3, 2)) * -2.0
+    del x46
+    x47 = np.zeros((nocc, nocc, nocc, nvir), dtype=np.float64)
+    x47 += einsum(t2[np.ix_(so,so,sv,sv)], (0, 1, 2, 3), v.ooov, (4, 5, 1, 2), (0, 4, 5, 3))
+    t3new += einsum(t2[np.ix_(so,sO,sV,sv)], (0, 1, 2, 3), x47, (4, 5, 0, 6), (5, 4, 1, 3, 6, 2)) * -1.0
+    x48 = np.zeros((nocc, nocc, nvir, nvir), dtype=np.float64)
+    x48 += einsum(t1[np.ix_(so,sv)], (0, 1), x47, (2, 3, 0, 4), (2, 3, 1, 4))
+    t2new[np.ix_(so,so,sv,sv)] += einsum(x48, (0, 1, 2, 3), (1, 0, 2, 3))
+    t2new[np.ix_(so,so,sv,sv)] += einsum(x48, (0, 1, 2, 3), (0, 1, 3, 2))
+    del x48
+    x49 = np.zeros((nocc, nocc, nocc, nvir), dtype=np.float64)
+    x49 += einsum(t2[np.ix_(so,so,sv,sv)], (0, 1, 2, 3), v.ooov, (4, 1, 5, 3), (0, 4, 5, 2))
+    t3new += einsum(t2[np.ix_(so,sO,sV,sv)], (0, 1, 2, 3), x49, (4, 5, 0, 6), (5, 4, 1, 3, 6, 2)) * -1.0
+    x50 = np.zeros((nocc, nocc, nvir, nvir), dtype=np.float64)
+    x50 += einsum(t1[np.ix_(so,sv)], (0, 1), x49, (2, 3, 0, 4), (2, 3, 1, 4))
+    t2new[np.ix_(so,so,sv,sv)] += einsum(x50, (0, 1, 2, 3), (1, 0, 2, 3))
+    t2new[np.ix_(so,so,sv,sv)] += einsum(x50, (0, 1, 2, 3), (0, 1, 3, 2))
+    del x50
+    x51 = np.zeros((nocc, nocc, nvir, nvir), dtype=np.float64)
+    x51 += einsum(x5, (0, 1), t2[np.ix_(so,so,sv,sv)], (2, 1, 3, 4), (2, 0, 3, 4))
+    del x5
+    t2new[np.ix_(so,so,sv,sv)] += einsum(x51, (0, 1, 2, 3), (0, 1, 2, 3))
+    t2new[np.ix_(so,so,sv,sv)] += einsum(x51, (0, 1, 2, 3), (1, 0, 3, 2))
+    del x51
+    x52 = np.zeros((nocc, nocc, nvir, nvir), dtype=np.float64)
+    x52 += einsum(x6, (0, 1), t2[np.ix_(so,so,sv,sv)], (2, 1, 3, 4), (2, 0, 3, 4))
+    del x6
+    t2new[np.ix_(so,so,sv,sv)] += einsum(x52, (0, 1, 2, 3), (0, 1, 2, 3)) * -2.0
+    t2new[np.ix_(so,so,sv,sv)] += einsum(x52, (0, 1, 2, 3), (1, 0, 3, 2)) * -2.0
+    del x52
+    x53 = np.zeros((nocc, nocc, nvir, nvir), dtype=np.float64)
+    x53 += einsum(t1[np.ix_(so,sv)], (0, 1), v.ovvv, (2, 1, 3, 4), (0, 2, 3, 4))
+    t3new += einsum(x53, (0, 1, 2, 3), t3[np.ix_(so,so,sO,sv,sv,sV)], (1, 4, 5, 3, 6, 7), (0, 4, 5, 2, 6, 7)) * -1.0
+    t3new += einsum(x53, (0, 1, 2, 3), t3[np.ix_(so,so,sO,sv,sv,sV)], (1, 4, 5, 6, 3, 7), (0, 4, 5, 6, 2, 7)) * -1.0
+    t3new += einsum(x53, (0, 1, 2, 3), t3[np.ix_(so,so,sO,sv,sv,sV)], (4, 1, 5, 3, 6, 7), (4, 0, 5, 2, 6, 7)) * -1.0
+    t3new += einsum(x53, (0, 1, 2, 3), t3[np.ix_(so,so,sO,sv,sv,sV)], (4, 1, 5, 6, 3, 7), (4, 0, 5, 6, 2, 7)) * -1.0
+    x54 = np.zeros((nocc, nocc, nvir, nvir), dtype=np.float64)
+    x54 += einsum(t2[np.ix_(so,so,sv,sv)], (0, 1, 2, 3), x53, (4, 1, 5, 3), (4, 0, 2, 5))
+    t2new[np.ix_(so,so,sv,sv)] += einsum(x54, (0, 1, 2, 3), (0, 1, 3, 2)) * -1.0
+    t2new[np.ix_(so,so,sv,sv)] += einsum(x54, (0, 1, 2, 3), (1, 0, 2, 3)) * -1.0
+    del x54
+    x55 = np.zeros((nocc, nocc, nvir, nvir), dtype=np.float64)
+    x55 += einsum(t2[np.ix_(so,so,sv,sv)], (0, 1, 2, 3), x53, (4, 1, 5, 2), (4, 0, 3, 5))
+    del x53
+    t2new[np.ix_(so,so,sv,sv)] += einsum(x55, (0, 1, 2, 3), (0, 1, 2, 3)) * -1.0
+    t2new[np.ix_(so,so,sv,sv)] += einsum(x55, (0, 1, 2, 3), (1, 0, 3, 2)) * -1.0
+    del x55
+    x56 = np.zeros((nocc, nocc, nvir, nvir), dtype=np.float64)
+    x56 += einsum(t2[np.ix_(so,so,sv,sv)], (0, 1, 2, 3), x21, (4, 1, 3, 5), (4, 0, 2, 5))
+    t2new[np.ix_(so,so,sv,sv)] += einsum(x56, (0, 1, 2, 3), (0, 1, 3, 2)) * 2.0
+    t2new[np.ix_(so,so,sv,sv)] += einsum(x56, (0, 1, 2, 3), (1, 0, 2, 3)) * 2.0
+    del x56
+    x57 = np.zeros((nocc, nocc, nvir, nvir), dtype=np.float64)
+    x57 += einsum(t2[np.ix_(so,so,sv,sv)], (0, 1, 2, 3), x21, (4, 1, 2, 5), (4, 0, 3, 5))
+    t2new[np.ix_(so,so,sv,sv)] += einsum(x57, (0, 1, 2, 3), (0, 1, 3, 2)) * -1.0
+    t2new[np.ix_(so,so,sv,sv)] += einsum(x57, (0, 1, 2, 3), (1, 0, 2, 3)) * -1.0
+    del x57
+    x58 = np.zeros((nocc, nocc, nocc, nvir), dtype=np.float64)
+    x58 += einsum(t2[np.ix_(so,so,sv,sv)], (0, 1, 2, 3), v.ovvv, (4, 2, 5, 3), (0, 1, 4, 5))
+    t3new += einsum(t2[np.ix_(so,sO,sV,sv)], (0, 1, 2, 3), x58, (4, 5, 0, 6), (4, 5, 1, 3, 6, 2))
+    x59 = np.zeros((nocc, nocc, nvir, nvir), dtype=np.float64)
+    x59 += einsum(t1[np.ix_(so,sv)], (0, 1), x58, (2, 3, 0, 4), (2, 3, 1, 4))
+    t2new[np.ix_(so,so,sv,sv)] += einsum(x59, (0, 1, 2, 3), (0, 1, 2, 3)) * -1.0
+    t2new[np.ix_(so,so,sv,sv)] += einsum(x59, (0, 1, 2, 3), (1, 0, 3, 2)) * -1.0
+    del x59
+    x60 = np.zeros((nocc, nocc, nvir, nvir), dtype=np.float64)
+    x60 += einsum(x8, (0, 1), t2[np.ix_(so,so,sv,sv)], (2, 3, 4, 1), (2, 3, 4, 0))
+    del x8
+    t2new[np.ix_(so,so,sv,sv)] += einsum(x60, (0, 1, 2, 3), (0, 1, 2, 3)) * 2.0
+    t2new[np.ix_(so,so,sv,sv)] += einsum(x60, (0, 1, 2, 3), (1, 0, 3, 2)) * 2.0
+    del x60
+    x61 = np.zeros((nocc, nocc, nvir, nvir), dtype=np.float64)
+    x61 += einsum(x7, (0, 1), t2[np.ix_(so,so,sv,sv)], (2, 3, 4, 0), (2, 3, 4, 1))
+    del x7
+    t2new[np.ix_(so,so,sv,sv)] += einsum(x61, (0, 1, 2, 3), (0, 1, 2, 3)) * -1.0
+    t2new[np.ix_(so,so,sv,sv)] += einsum(x61, (0, 1, 2, 3), (1, 0, 3, 2)) * -1.0
+    del x61
+    x62 = np.zeros((naocc, navir, nocc, nocc), dtype=np.float64)
+    x62 += einsum(t1[np.ix_(so,sv)], (0, 1), v.ovOV, (2, 1, 3, 4), (3, 4, 0, 2))
+    t2new[np.ix_(so,so,sv,sv)] += einsum(x62, (0, 1, 2, 3), t3[np.ix_(so,so,sO,sv,sv,sV)], (4, 3, 0, 5, 6, 1), (2, 4, 6, 5)) * -1.0
+    x63 = np.zeros((nocc, nocc, nvir, nvir), dtype=np.float64)
+    x63 += einsum(x62, (0, 1, 2, 3), t3[np.ix_(so,so,sO,sv,sv,sV)], (3, 4, 0, 5, 6, 1), (2, 4, 5, 6))
+    t2new[np.ix_(so,so,sv,sv)] += einsum(x63, (0, 1, 2, 3), (0, 1, 2, 3)) * -0.5
+    t2new[np.ix_(so,so,sv,sv)] += einsum(x63, (0, 1, 2, 3), (1, 0, 3, 2)) * -0.5
+    del x63
+    x64 = np.zeros((naocc, navir, nocc, nocc), dtype=np.float64)
+    x64 += einsum(t1[np.ix_(so,sv)], (0, 1), v.oVvO, (2, 3, 1, 4), (4, 3, 0, 2))
+    x65 = np.zeros((nocc, nocc, nvir, nvir), dtype=np.float64)
+    x65 += einsum(x64, (0, 1, 2, 3), t3[np.ix_(so,so,sO,sv,sv,sV)], (3, 4, 0, 5, 6, 1), (2, 4, 5, 6))
+    del x64
+    t2new[np.ix_(so,so,sv,sv)] += einsum(x65, (0, 1, 2, 3), (0, 1, 2, 3)) * 0.5
+    t2new[np.ix_(so,so,sv,sv)] += einsum(x65, (0, 1, 2, 3), (1, 0, 3, 2)) * 0.5
+    del x65
+    x66 = np.zeros((naocc, navir, nocc, nocc), dtype=np.float64)
+    x66 += einsum(t1[np.ix_(so,sv)], (0, 1), v.ovOV, (2, 1, 3, 4), (3, 4, 0, 2))
+    t2new[np.ix_(so,so,sv,sv)] += einsum(x66, (0, 1, 2, 3), t3[np.ix_(so,so,sO,sv,sv,sV)], (4, 3, 0, 5, 6, 1), (4, 2, 5, 6)) * -1.0
+    del x66
+    x67 = np.zeros((nocc, nocc, nocc, nvir), dtype=np.float64)
+    x67 += einsum(v.ovOV, (0, 1, 2, 3), t3[np.ix_(so,so,sO,sv,sv,sV)], (4, 5, 2, 1, 6, 3), (4, 5, 0, 6))
+    t3new += einsum(t2[np.ix_(so,sO,sV,sv)], (0, 1, 2, 3), x67, (4, 5, 0, 6), (4, 5, 1, 3, 6, 2)) * 0.5
+    x68 = np.zeros((nocc, nocc, nvir, nvir), dtype=np.float64)
+    x68 += einsum(t1[np.ix_(so,sv)], (0, 1), x67, (2, 3, 0, 4), (2, 3, 1, 4))
+    t2new[np.ix_(so,so,sv,sv)] += einsum(x68, (0, 1, 2, 3), (0, 1, 2, 3)) * -0.5
+    t2new[np.ix_(so,so,sv,sv)] += einsum(x68, (0, 1, 2, 3), (1, 0, 3, 2)) * -0.5
+    del x68
+    x69 = np.zeros((nocc, nocc, nocc, nvir), dtype=np.float64)
+    x69 += einsum(v.oVvO, (0, 1, 2, 3), t3[np.ix_(so,so,sO,sv,sv,sV)], (4, 5, 3, 2, 6, 1), (4, 5, 0, 6))
+    t3new += einsum(t2[np.ix_(so,sO,sV,sv)], (0, 1, 2, 3), x69, (4, 5, 0, 6), (4, 5, 1, 3, 6, 2)) * -0.5
+    x70 = np.zeros((nocc, nocc, nvir, nvir), dtype=np.float64)
+    x70 += einsum(t1[np.ix_(so,sv)], (0, 1), x69, (2, 3, 0, 4), (2, 3, 1, 4))
+    t2new[np.ix_(so,so,sv,sv)] += einsum(x70, (0, 1, 2, 3), (0, 1, 2, 3)) * 0.5
+    t2new[np.ix_(so,so,sv,sv)] += einsum(x70, (0, 1, 2, 3), (1, 0, 3, 2)) * 0.5
+    del x70
+    x71 = np.zeros((nocc, nocc, nocc, nvir), dtype=np.float64)
+    x71 += einsum(v.ovOV, (0, 1, 2, 3), t3[np.ix_(so,so,sO,sv,sv,sV)], (4, 5, 2, 6, 1, 3), (4, 5, 0, 6))
+    t3new += einsum(t2[np.ix_(so,sO,sV,sv)], (0, 1, 2, 3), x71, (4, 5, 0, 6), (5, 4, 1, 3, 6, 2))
+    x72 = np.zeros((nocc, nocc, nvir, nvir), dtype=np.float64)
+    x72 += einsum(t1[np.ix_(so,sv)], (0, 1), x71, (2, 3, 0, 4), (2, 3, 1, 4))
+    t2new[np.ix_(so,so,sv,sv)] += einsum(x72, (0, 1, 2, 3), (1, 0, 2, 3)) * -1.0
+    t2new[np.ix_(so,so,sv,sv)] += einsum(x72, (0, 1, 2, 3), (0, 1, 3, 2)) * -1.0
+    del x72
+    x73 = np.zeros((naocc, navir), dtype=np.float64)
+    x73 += einsum(t1[np.ix_(so,sv)], (0, 1), v.ovOV, (0, 1, 2, 3), (2, 3))
+    x74 = np.zeros((nocc, nocc, nvir, nvir), dtype=np.float64)
+    x74 += einsum(x73, (0, 1), t3[np.ix_(so,so,sO,sv,sv,sV)], (2, 3, 0, 4, 5, 1), (2, 3, 4, 5))
+    del x73
+    t2new[np.ix_(so,so,sv,sv)] += einsum(x74, (0, 1, 2, 3), (0, 1, 2, 3)) * 2.0
+    t2new[np.ix_(so,so,sv,sv)] += einsum(x74, (0, 1, 2, 3), (1, 0, 3, 2)) * 2.0
+    del x74
+    x75 = np.zeros((naocc, navir), dtype=np.float64)
+    x75 += einsum(t1[np.ix_(so,sv)], (0, 1), v.oVvO, (0, 2, 1, 3), (3, 2))
+    x76 = np.zeros((nocc, nocc, nvir, nvir), dtype=np.float64)
+    x76 += einsum(x75, (0, 1), t3[np.ix_(so,so,sO,sv,sv,sV)], (2, 3, 0, 4, 5, 1), (2, 3, 4, 5))
+    del x75
+    t2new[np.ix_(so,so,sv,sv)] += einsum(x76, (0, 1, 2, 3), (0, 1, 2, 3)) * -1.0
+    t2new[np.ix_(so,so,sv,sv)] += einsum(x76, (0, 1, 2, 3), (1, 0, 3, 2)) * -1.0
+    del x76
+    x77 = np.zeros((nocc, nocc, nvir, nvir), dtype=np.float64)
+    x77 += einsum(x14, (0, 1), t2[np.ix_(so,so,sv,sv)], (2, 1, 3, 4), (2, 0, 3, 4))
+    del x14
+    t2new[np.ix_(so,so,sv,sv)] += einsum(x77, (0, 1, 2, 3), (0, 1, 2, 3))
+    t2new[np.ix_(so,so,sv,sv)] += einsum(x77, (0, 1, 2, 3), (1, 0, 3, 2))
+    del x77
+    x78 = np.zeros((nocc, nocc, nvir, nvir), dtype=np.float64)
+    x78 += einsum(t2[np.ix_(so,so,sv,sv)], (0, 1, 2, 3), x26, (4, 1, 5, 3), (0, 4, 2, 5))
+    del x26
+    t2new[np.ix_(so,so,sv,sv)] += einsum(x78, (0, 1, 2, 3), (0, 1, 2, 3)) * -2.0
+    t2new[np.ix_(so,so,sv,sv)] += einsum(x78, (0, 1, 2, 3), (1, 0, 3, 2)) * -2.0
+    del x78
+    x79 = np.zeros((nocc, nocc, nvir, nvir), dtype=np.float64)
+    x79 += einsum(x12, (0, 1), t2[np.ix_(so,so,sv,sv)], (2, 1, 3, 4), (2, 0, 3, 4))
+    t2new[np.ix_(so,so,sv,sv)] += einsum(x79, (0, 1, 2, 3), (1, 0, 3, 2)) * -1.0
+    t2new[np.ix_(so,so,sv,sv)] += einsum(x79, (0, 1, 2, 3), (0, 1, 2, 3)) * -2.0
+    t2new[np.ix_(so,so,sv,sv)] += einsum(x79, (0, 1, 2, 3), (1, 0, 3, 2)) * -1.0
+    del x79
+    x80 = np.zeros((nocc, nocc, nvir, nvir), dtype=np.float64)
+    x80 += einsum(t2[np.ix_(so,so,sv,sv)], (0, 1, 2, 3), v.ovov, (4, 3, 1, 5), (0, 4, 2, 5))
+    t2new[np.ix_(so,so,sv,sv)] += einsum(t2[np.ix_(so,so,sv,sv)], (0, 1, 2, 3), x80, (4, 1, 5, 3), (4, 0, 5, 2)) * -2.0
+    del x80
+    x81 = np.zeros((nocc, nocc, nvir, nvir), dtype=np.float64)
+    x81 += einsum(t2[np.ix_(so,so,sv,sv)], (0, 1, 2, 3), v.ovov, (4, 2, 1, 5), (0, 4, 3, 5))
+    t2new[np.ix_(so,so,sv,sv)] += einsum(t2[np.ix_(so,so,sv,sv)], (0, 1, 2, 3), x81, (4, 1, 5, 2), (4, 0, 3, 5))
+    x82 = np.zeros((nocc, nocc, nvir, nvir), dtype=np.float64)
+    x82 += einsum(t2[np.ix_(so,so,sv,sv)], (0, 1, 2, 3), x81, (4, 1, 5, 3), (0, 4, 2, 5))
+    del x81
+    t2new[np.ix_(so,so,sv,sv)] += einsum(x82, (0, 1, 2, 3), (0, 1, 2, 3))
+    t2new[np.ix_(so,so,sv,sv)] += einsum(x82, (0, 1, 2, 3), (1, 0, 3, 2))
+    del x82
+    x83 = np.zeros((nvir, nvir), dtype=np.float64)
+    x83 += einsum(t2[np.ix_(so,so,sv,sv)], (0, 1, 2, 3), v.ovov, (0, 2, 1, 4), (3, 4))
+    x84 = np.zeros((nocc, nocc, nvir, nvir), dtype=np.float64)
+    x84 += einsum(x83, (0, 1), t2[np.ix_(so,so,sv,sv)], (2, 3, 4, 1), (2, 3, 4, 0))
+    t2new[np.ix_(so,so,sv,sv)] += einsum(x84, (0, 1, 2, 3), (0, 1, 2, 3)) * -0.5
+    t2new[np.ix_(so,so,sv,sv)] += einsum(x84, (0, 1, 2, 3), (1, 0, 3, 2)) * -1.5
+    t2new[np.ix_(so,so,sv,sv)] += einsum(x84, (0, 1, 2, 3), (0, 1, 2, 3)) * -1.5
+    t2new[np.ix_(so,so,sv,sv)] += einsum(x84, (0, 1, 2, 3), (1, 0, 3, 2)) * -0.5
+    del x84
+    x85 = np.zeros((nvir, nvir), dtype=np.float64)
+    x85 += einsum(t2[np.ix_(so,so,sv,sv)], (0, 1, 2, 3), v.ovov, (0, 4, 1, 2), (3, 4))
+    x86 = np.zeros((nocc, nocc, nvir, nvir), dtype=np.float64)
+    x86 += einsum(x85, (0, 1), t2[np.ix_(so,so,sv,sv)], (2, 3, 4, 1), (2, 3, 4, 0))
+    t2new[np.ix_(so,so,sv,sv)] += einsum(x86, (0, 1, 2, 3), (0, 1, 2, 3)) * 0.5
+    t2new[np.ix_(so,so,sv,sv)] += einsum(x86, (0, 1, 2, 3), (1, 0, 3, 2)) * 0.5
+    t2new[np.ix_(so,so,sv,sv)] += einsum(x86, (0, 1, 2, 3), (0, 1, 2, 3)) * 0.5
+    t2new[np.ix_(so,so,sv,sv)] += einsum(x86, (0, 1, 2, 3), (1, 0, 3, 2)) * 0.5
+    del x86
+    x87 = np.zeros((nocc, nocc, nocc, nocc), dtype=np.float64)
+    x87 += einsum(t2[np.ix_(so,so,sv,sv)], (0, 1, 2, 3), v.ovov, (4, 2, 5, 3), (0, 1, 4, 5))
+    t2new[np.ix_(so,so,sv,sv)] += einsum(t2[np.ix_(so,so,sv,sv)], (0, 1, 2, 3), x87, (4, 5, 0, 1), (5, 4, 3, 2))
+    t3new += einsum(x87, (0, 1, 2, 3), t3[np.ix_(so,so,sO,sv,sv,sV)], (3, 2, 4, 5, 6, 7), (1, 0, 4, 5, 6, 7))
+    x88 = np.zeros((nocc, nocc, nocc, nvir), dtype=np.float64)
+    x88 += einsum(t1[np.ix_(so,sv)], (0, 1), x41, (2, 3, 4, 0), (2, 4, 3, 1))
+    x89 = np.zeros((nocc, nocc, nvir, nvir), dtype=np.float64)
+    x89 += einsum(t1[np.ix_(so,sv)], (0, 1), x88, (2, 0, 3, 4), (2, 3, 1, 4))
+    del x88
+    t2new[np.ix_(so,so,sv,sv)] += einsum(x89, (0, 1, 2, 3), (0, 1, 3, 2))
+    t2new[np.ix_(so,so,sv,sv)] += einsum(x89, (0, 1, 2, 3), (1, 0, 2, 3))
+    del x89
+    x90 = np.zeros((nocc, nocc, nocc, nvir), dtype=np.float64)
+    x90 += einsum(t1[np.ix_(so,sv)], (0, 1), x21, (2, 3, 1, 4), (0, 2, 3, 4))
+    del x21
+    t3new += einsum(t2[np.ix_(so,sO,sV,sv)], (0, 1, 2, 3), x90, (4, 5, 0, 6), (4, 5, 1, 3, 6, 2))
+    x91 = np.zeros((nocc, nocc, nvir, nvir), dtype=np.float64)
+    x91 += einsum(t1[np.ix_(so,sv)], (0, 1), x90, (2, 3, 0, 4), (2, 3, 1, 4))
+    t2new[np.ix_(so,so,sv,sv)] += einsum(x91, (0, 1, 2, 3), (0, 1, 2, 3)) * -1.0
+    t2new[np.ix_(so,so,sv,sv)] += einsum(x91, (0, 1, 2, 3), (1, 0, 3, 2)) * -1.0
+    del x91
+    x92 = np.zeros((nocc, nocc, nocc, nocc), dtype=np.float64)
+    x92 += einsum(t1[np.ix_(so,sv)], (0, 1), x9, (2, 3, 4, 1), (2, 0, 4, 3))
+    t2new[np.ix_(so,so,sv,sv)] += einsum(t2[np.ix_(so,so,sv,sv)], (0, 1, 2, 3), x92, (4, 5, 0, 1), (5, 4, 3, 2))
+    t3new += einsum(x92, (0, 1, 2, 3), t3[np.ix_(so,so,sO,sv,sv,sV)], (3, 2, 4, 5, 6, 7), (1, 0, 4, 5, 6, 7))
+    x93 = np.zeros((nocc, nocc, nocc, nvir), dtype=np.float64)
+    x93 += einsum(t2[np.ix_(so,so,sv,sv)], (0, 1, 2, 3), x9, (4, 1, 5, 3), (4, 0, 5, 2))
+    t3new += einsum(t2[np.ix_(so,sO,sV,sv)], (0, 1, 2, 3), x93, (4, 5, 0, 6), (4, 5, 1, 3, 6, 2)) * 2.0
+    x94 = np.zeros((nocc, nocc, nvir, nvir), dtype=np.float64)
+    x94 += einsum(t1[np.ix_(so,sv)], (0, 1), x93, (2, 3, 0, 4), (2, 3, 1, 4))
+    t2new[np.ix_(so,so,sv,sv)] += einsum(x94, (0, 1, 2, 3), (0, 1, 2, 3)) * -2.0
+    t2new[np.ix_(so,so,sv,sv)] += einsum(x94, (0, 1, 2, 3), (1, 0, 3, 2)) * -2.0
+    del x94
+    x95 = np.zeros((nocc, nocc, nocc, nvir), dtype=np.float64)
+    x95 += einsum(t2[np.ix_(so,so,sv,sv)], (0, 1, 2, 3), x9, (4, 1, 5, 2), (4, 0, 5, 3))
+    t3new += einsum(t2[np.ix_(so,sO,sV,sv)], (0, 1, 2, 3), x95, (4, 5, 0, 6), (4, 5, 1, 3, 6, 2)) * -1.0
+    x96 = np.zeros((nocc, nocc, nvir, nvir), dtype=np.float64)
+    x96 += einsum(t1[np.ix_(so,sv)], (0, 1), x95, (2, 3, 0, 4), (2, 3, 1, 4))
+    t2new[np.ix_(so,so,sv,sv)] += einsum(x96, (0, 1, 2, 3), (0, 1, 2, 3))
+    t2new[np.ix_(so,so,sv,sv)] += einsum(x96, (0, 1, 2, 3), (1, 0, 3, 2))
+    del x96
+    x97 = np.zeros((nocc, nocc, nocc, nvir), dtype=np.float64)
+    x97 += einsum(t2[np.ix_(so,so,sv,sv)], (0, 1, 2, 3), x9, (4, 5, 1, 3), (4, 0, 5, 2))
+    t3new += einsum(t2[np.ix_(so,sO,sV,sv)], (0, 1, 2, 3), x97, (4, 5, 0, 6), (4, 5, 1, 3, 6, 2)) * -1.0
+    x98 = np.zeros((nocc, nocc, nvir, nvir), dtype=np.float64)
+    x98 += einsum(t1[np.ix_(so,sv)], (0, 1), x97, (2, 3, 0, 4), (2, 3, 1, 4))
+    t2new[np.ix_(so,so,sv,sv)] += einsum(x98, (0, 1, 2, 3), (0, 1, 2, 3))
+    t2new[np.ix_(so,so,sv,sv)] += einsum(x98, (0, 1, 2, 3), (1, 0, 3, 2))
+    del x98
+    x99 = np.zeros((nocc, nocc, nocc, nvir), dtype=np.float64)
+    x99 += einsum(t2[np.ix_(so,so,sv,sv)], (0, 1, 2, 3), x9, (4, 5, 1, 2), (4, 0, 5, 3))
+    t3new += einsum(t2[np.ix_(so,sO,sV,sv)], (0, 1, 2, 3), x99, (4, 5, 0, 6), (5, 4, 1, 3, 6, 2)) * -1.0
+    x100 = np.zeros((nocc, nocc, nvir, nvir), dtype=np.float64)
+    x100 += einsum(t1[np.ix_(so,sv)], (0, 1), x99, (2, 3, 0, 4), (2, 3, 1, 4))
+    t2new[np.ix_(so,so,sv,sv)] += einsum(x100, (0, 1, 2, 3), (0, 1, 3, 2))
+    t2new[np.ix_(so,so,sv,sv)] += einsum(x100, (0, 1, 2, 3), (1, 0, 2, 3))
+    del x100
+    x101 = np.zeros((nocc, nocc, nvir, nvir), dtype=np.float64)
+    x101 += einsum(x16, (0, 1), t2[np.ix_(so,so,sv,sv)], (2, 1, 3, 4), (0, 2, 3, 4))
+    del x16
+    t2new[np.ix_(so,so,sv,sv)] += einsum(x101, (0, 1, 2, 3), (0, 1, 3, 2))
+    t2new[np.ix_(so,so,sv,sv)] += einsum(x101, (0, 1, 2, 3), (1, 0, 2, 3))
+    del x101
+    x102 = np.zeros((nocc, nocc, nvir, nvir), dtype=np.float64)
+    x102 += einsum(x17, (0, 1), t2[np.ix_(so,so,sv,sv)], (2, 1, 3, 4), (0, 2, 3, 4))
+    del x17
+    t2new[np.ix_(so,so,sv,sv)] += einsum(x102, (0, 1, 2, 3), (0, 1, 3, 2)) * -2.0
+    t2new[np.ix_(so,so,sv,sv)] += einsum(x102, (0, 1, 2, 3), (1, 0, 2, 3)) * -2.0
+    del x102
+    x103 = np.zeros((nocc, nocc, nocc, nvir), dtype=np.float64)
+    x103 += einsum(t1[np.ix_(so,sv)], (0, 1), x87, (2, 3, 0, 4), (3, 2, 4, 1))
+    t2new[np.ix_(so,so,sv,sv)] += einsum(t1[np.ix_(so,sv)], (0, 1), x103, (2, 3, 0, 4), (3, 2, 4, 1))
+    del x103
+    x104 = np.zeros((nocc, nocc, nocc, nvir), dtype=np.float64)
+    x104 += einsum(x0, (0, 1), t2[np.ix_(so,so,sv,sv)], (2, 3, 4, 1), (2, 3, 0, 4))
+    t3new += einsum(t2[np.ix_(so,sO,sV,sv)], (0, 1, 2, 3), x104, (4, 5, 0, 6), (5, 4, 1, 3, 6, 2)) * 2.0
+    x105 = np.zeros((nocc, nocc, nvir, nvir), dtype=np.float64)
+    x105 += einsum(t1[np.ix_(so,sv)], (0, 1), x104, (2, 3, 0, 4), (2, 3, 1, 4))
+    t2new[np.ix_(so,so,sv,sv)] += einsum(x105, (0, 1, 2, 3), (1, 0, 2, 3)) * -2.0
+    t2new[np.ix_(so,so,sv,sv)] += einsum(x105, (0, 1, 2, 3), (0, 1, 3, 2)) * -2.0
+    del x105
+    x106 = np.zeros((nocc, nocc, nocc, nvir), dtype=np.float64)
+    x106 += einsum(x15, (0, 1), t2[np.ix_(so,so,sv,sv)], (2, 3, 4, 1), (2, 3, 0, 4))
+    t3new += einsum(t2[np.ix_(so,sO,sV,sv)], (0, 1, 2, 3), x106, (4, 5, 0, 6), (5, 4, 1, 3, 6, 2)) * -1.0
+    x107 = np.zeros((nocc, nocc, nvir, nvir), dtype=np.float64)
+    x107 += einsum(t1[np.ix_(so,sv)], (0, 1), x106, (2, 3, 0, 4), (2, 3, 1, 4))
+    t2new[np.ix_(so,so,sv,sv)] += einsum(x107, (0, 1, 2, 3), (1, 0, 2, 3))
+    t2new[np.ix_(so,so,sv,sv)] += einsum(x107, (0, 1, 2, 3), (0, 1, 3, 2))
+    del x107
+    x108 = np.zeros((nocc, nocc, nocc, nvir), dtype=np.float64)
+    x108 += einsum(t1[np.ix_(so,sv)], (0, 1), x92, (2, 3, 0, 4), (3, 2, 4, 1))
+    t2new[np.ix_(so,so,sv,sv)] += einsum(t1[np.ix_(so,sv)], (0, 1), x108, (2, 3, 0, 4), (2, 3, 1, 4))
+    del x108
+    x109 = np.zeros((naocc, navir, nocc, nocc, nvir, nvir), dtype=np.float64)
+    x109 += einsum(t2[np.ix_(so,so,sv,sv)], (0, 1, 2, 3), v.ooOV, (4, 1, 5, 6), (5, 6, 0, 4, 2, 3))
+    t3new += einsum(x109, (0, 1, 2, 3, 4, 5), (2, 3, 0, 4, 5, 1)) * -1.0
+    t3new += einsum(x109, (0, 1, 2, 3, 4, 5), (3, 2, 0, 5, 4, 1)) * -1.0
+    del x109
+    x110 = np.zeros((naocc, navir, nocc, nocc, nvir, nvir), dtype=np.float64)
+    x110 += einsum(t2[np.ix_(so,so,sv,sV)], (0, 1, 2, 3), v.ovoO, (4, 5, 1, 6), (6, 3, 0, 4, 2, 5))
+    t3new += einsum(x110, (0, 1, 2, 3, 4, 5), (2, 3, 0, 4, 5, 1)) * -1.0
+    t3new += einsum(x110, (0, 1, 2, 3, 4, 5), (3, 2, 0, 5, 4, 1)) * -1.0
+    del x110
+    x111 = np.zeros((naocc, navir, nocc, nocc, nvir, nvir), dtype=np.float64)
+    x111 += einsum(t2[np.ix_(so,sO,sv,sV)], (0, 1, 2, 3), v.ooov, (4, 0, 5, 6), (1, 3, 4, 5, 2, 6))
+    t3new += einsum(x111, (0, 1, 2, 3, 4, 5), (2, 3, 0, 4, 5, 1)) * -1.0
+    t3new += einsum(x111, (0, 1, 2, 3, 4, 5), (3, 2, 0, 5, 4, 1)) * -1.0
+    del x111
+    x112 = np.zeros((naocc, navir, nocc, nocc, nvir, nvir), dtype=np.float64)
+    x112 += einsum(t2[np.ix_(so,sO,sv,sv)], (0, 1, 2, 3), v.ovvV, (4, 5, 3, 6), (1, 6, 0, 4, 2, 5))
+    t3new += einsum(x112, (0, 1, 2, 3, 4, 5), (2, 3, 0, 4, 5, 1))
+    t3new += einsum(x112, (0, 1, 2, 3, 4, 5), (3, 2, 0, 5, 4, 1))
+    del x112
+    x113 = np.zeros((naocc, navir, nocc, nocc, nvir, nvir), dtype=np.float64)
+    x113 += einsum(t2[np.ix_(so,sO,sv,sV)], (0, 1, 2, 3), v.ovvv, (4, 5, 6, 2), (1, 3, 0, 4, 5, 6))
+    t3new += einsum(x113, (0, 1, 2, 3, 4, 5), (2, 3, 0, 5, 4, 1))
+    t3new += einsum(x113, (0, 1, 2, 3, 4, 5), (3, 2, 0, 4, 5, 1))
+    x114 = np.zeros((naocc, navir, nocc, nocc, nvir, nvir), dtype=np.float64)
+    x114 += einsum(t2[np.ix_(so,so,sv,sv)], (0, 1, 2, 3), v.vvOV, (4, 3, 5, 6), (5, 6, 0, 1, 2, 4))
+    t3new += einsum(x114, (0, 1, 2, 3, 4, 5), (3, 2, 0, 5, 4, 1))
+    t3new += einsum(x114, (0, 1, 2, 3, 4, 5), (2, 3, 0, 4, 5, 1))
+    del x114
+    x115 = np.zeros((naocc, navir, nocc, nocc, nvir, nvir), dtype=np.float64)
+    x115 += einsum(t2[np.ix_(so,sO,sV,sv)], (0, 1, 2, 3), v.ovvv, (4, 5, 6, 3), (1, 2, 0, 4, 5, 6))
+    t3new += einsum(x115, (0, 1, 2, 3, 4, 5), (2, 3, 0, 5, 4, 1)) * -1.0
+    t3new += einsum(t2[np.ix_(so,so,sv,sv)], (0, 1, 2, 3), x115, (4, 5, 6, 1, 3, 7), (6, 0, 4, 7, 2, 5)) * -2.0
+    t3new += einsum(t2[np.ix_(so,so,sv,sv)], (0, 1, 2, 3), x115, (4, 5, 6, 1, 2, 7), (6, 0, 4, 7, 3, 5))
+    x116 = np.zeros((naocc, navir, nocc, nocc, nvir, nvir), dtype=np.float64)
+    x116 += einsum(v.ovov, (0, 1, 2, 3), t3[np.ix_(so,so,sO,sv,sv,sV)], (2, 4, 5, 3, 6, 7), (5, 7, 4, 0, 6, 1))
+    t3new += einsum(x116, (0, 1, 2, 3, 4, 5), (3, 2, 0, 5, 4, 1))
+    t3new += einsum(t2[np.ix_(so,so,sv,sv)], (0, 1, 2, 3), x116, (4, 5, 6, 1, 7, 3), (0, 6, 4, 2, 7, 5)) * 2.0
+    t3new += einsum(t2[np.ix_(so,so,sv,sv)], (0, 1, 2, 3), x116, (4, 5, 6, 1, 7, 2), (0, 6, 4, 3, 7, 5)) * -1.0
+    del x116
+    x117 = np.zeros((naocc, navir, nocc, nocc, nvir, nvir), dtype=np.float64)
+    x117 += einsum(v.ovov, (0, 1, 2, 3), t3[np.ix_(so,so,sO,sv,sv,sV)], (4, 2, 5, 6, 3, 7), (5, 7, 4, 0, 6, 1))
+    t3new += einsum(x117, (0, 1, 2, 3, 4, 5), (2, 3, 0, 4, 5, 1)) * 2.0
+    t3new += einsum(t2[np.ix_(so,so,sv,sv)], (0, 1, 2, 3), x117, (4, 5, 6, 1, 7, 3), (6, 0, 4, 7, 2, 5)) * 4.0
+    t3new += einsum(t2[np.ix_(so,so,sv,sv)], (0, 1, 2, 3), x117, (4, 5, 6, 1, 7, 2), (6, 0, 4, 7, 3, 5)) * -2.0
+    del x117
+    x118 = np.zeros((naocc, navir, nocc, nocc, nvir, nvir), dtype=np.float64)
+    x118 += einsum(v.ovov, (0, 1, 2, 3), t3[np.ix_(so,so,sO,sv,sv,sV)], (4, 2, 5, 3, 6, 7), (5, 7, 4, 0, 6, 1))
+    t3new += einsum(x118, (0, 1, 2, 3, 4, 5), (2, 3, 0, 4, 5, 1)) * -1.0
+    t3new += einsum(t2[np.ix_(so,so,sv,sv)], (0, 1, 2, 3), x118, (4, 5, 6, 1, 7, 3), (6, 0, 4, 7, 2, 5)) * -2.0
+    t3new += einsum(t2[np.ix_(so,so,sv,sv)], (0, 1, 2, 3), x118, (4, 5, 6, 1, 7, 2), (6, 0, 4, 7, 3, 5))
+    del x118
+    x119 = np.zeros((naocc, navir, nocc, nocc, nvir, nvir), dtype=np.float64)
+    x119 += einsum(v.OVOV, (0, 1, 2, 3), t3[np.ix_(so,so,sO,sv,sv,sV)], (4, 5, 2, 6, 7, 3), (0, 1, 4, 5, 6, 7))
+    t3new += einsum(x119, (0, 1, 2, 3, 4, 5), (2, 3, 0, 4, 5, 1))
+    t3new += einsum(x119, (0, 1, 2, 3, 4, 5), (3, 2, 0, 5, 4, 1))
+    del x119
+    x120 = np.zeros((naocc, navir, nocc, nocc, nocc, nvir), dtype=np.float64)
+    x120 += einsum(f.ov, (0, 1), t3[np.ix_(so,so,sO,sv,sv,sV)], (2, 3, 4, 1, 5, 6), (4, 6, 0, 2, 3, 5))
+    t3new += einsum(t1[np.ix_(so,sv)], (0, 1), x120, (2, 3, 0, 4, 5, 6), (4, 5, 2, 1, 6, 3)) * -1.0
+    del x120
+    x121 = np.zeros((naocc, navir, nocc, nocc, nocc, nvir), dtype=np.float64)
+    x121 += einsum(f.ov, (0, 1), t3[np.ix_(so,so,sO,sv,sv,sV)], (2, 3, 4, 5, 1, 6), (4, 6, 0, 2, 3, 5))
+    t3new += einsum(t1[np.ix_(so,sv)], (0, 1), x121, (2, 3, 0, 4, 5, 6), (4, 5, 2, 6, 1, 3)) * -1.0
+    del x121
+    x122 = np.zeros((navir, navir), dtype=np.float64)
+    x122 += einsum(f.oV, (0, 1), t1[np.ix_(so,sV)], (0, 2), (1, 2))
+    t3new += einsum(x122, (0, 1), t3[np.ix_(so,so,sO,sv,sv,sV)], (2, 3, 4, 5, 6, 0), (2, 3, 4, 5, 6, 1)) * -1.0
+    del x122
+    x123 = np.zeros((naocc, naocc), dtype=np.float64)
+    x123 += einsum(f.vO, (0, 1), t1[np.ix_(sO,sv)], (2, 0), (1, 2))
+    t3new += einsum(x123, (0, 1), t3[np.ix_(so,so,sO,sv,sv,sV)], (2, 3, 0, 4, 5, 6), (2, 3, 1, 4, 5, 6)) * -1.0
+    del x123
+    x124 = np.zeros((naocc, navir, nocc, nocc), dtype=np.float64)
+    x124 += einsum(f.ov, (0, 1), t2[np.ix_(so,sO,sv,sV)], (2, 3, 1, 4), (3, 4, 0, 2))
+    x125 = np.zeros((naocc, navir, nocc, nocc, nvir, nvir), dtype=np.float64)
+    x125 += einsum(t2[np.ix_(so,so,sv,sv)], (0, 1, 2, 3), x124, (4, 5, 1, 6), (4, 5, 6, 0, 2, 3))
+    del x124
+    t3new += einsum(x125, (0, 1, 2, 3, 4, 5), (3, 2, 0, 4, 5, 1)) * -1.0
+    t3new += einsum(x125, (0, 1, 2, 3, 4, 5), (2, 3, 0, 5, 4, 1)) * -1.0
+    del x125
+    x126 = np.zeros((naocc, navir, nocc, nocc, nvir, nvir), dtype=np.float64)
+    x126 += einsum(t2[np.ix_(so,sO,sv,sV)], (0, 1, 2, 3), x34, (0, 4, 5, 6), (1, 3, 4, 5, 2, 6))
+    del x34
+    t3new += einsum(x126, (0, 1, 2, 3, 4, 5), (2, 3, 0, 5, 4, 1)) * -1.0
+    t3new += einsum(x126, (0, 1, 2, 3, 4, 5), (3, 2, 0, 4, 5, 1)) * -1.0
+    del x126
+    x127 = np.zeros((naocc, nocc, nocc, nvir), dtype=np.float64)
+    x127 += einsum(f.ov, (0, 1), t2[np.ix_(so,sO,sv,sv)], (2, 3, 4, 1), (3, 0, 2, 4))
+    t3new += einsum(t2[np.ix_(so,so,sv,sV)], (0, 1, 2, 3), x127, (4, 0, 5, 6), (1, 5, 4, 2, 6, 3))
+    x128 = np.zeros((naocc, navir, nocc, nocc, nvir, nvir), dtype=np.float64)
+    x128 += einsum(t2[np.ix_(so,so,sv,sV)], (0, 1, 2, 3), x127, (4, 1, 5, 6), (4, 3, 5, 0, 6, 2))
+    del x127
+    t3new += einsum(x128, (0, 1, 2, 3, 4, 5), (3, 2, 0, 5, 4, 1)) * -1.0
+    t3new += einsum(x128, (0, 1, 2, 3, 4, 5), (2, 3, 0, 4, 5, 1)) * -1.0
+    del x128
+    x129 = np.zeros((naocc, nocc, nocc, nvir), dtype=np.float64)
+    x129 += einsum(f.ov, (0, 1), t2[np.ix_(so,sO,sv,sv)], (2, 3, 1, 4), (3, 0, 2, 4))
+    t3new += einsum(t2[np.ix_(so,so,sv,sV)], (0, 1, 2, 3), x129, (4, 1, 5, 6), (5, 0, 4, 6, 2, 3))
+    t3new += einsum(t2[np.ix_(so,so,sv,sV)], (0, 1, 2, 3), x129, (4, 0, 5, 6), (1, 5, 4, 6, 2, 3))
+    del x129
+    x130 = np.zeros((navir, nocc, nocc, nocc), dtype=np.float64)
+    x130 += einsum(f.ov, (0, 1), t2[np.ix_(so,so,sv,sV)], (2, 3, 1, 4), (4, 0, 3, 2))
+    t3new += einsum(t2[np.ix_(so,sO,sv,sv)], (0, 1, 2, 3), x130, (4, 0, 5, 6), (5, 6, 1, 3, 2, 4))
+    del x130
+    x131 = np.zeros((naocc, navir, nocc, nocc), dtype=np.float64)
+    x131 += einsum(f.ov, (0, 1), t2[np.ix_(so,sO,sV,sv)], (2, 3, 4, 1), (3, 4, 0, 2))
+    t3new += einsum(t2[np.ix_(so,so,sv,sv)], (0, 1, 2, 3), x131, (4, 5, 1, 6), (6, 0, 4, 3, 2, 5))
+    del x131
+    x132 = np.zeros((naocc, nocc, nocc, nvir), dtype=np.float64)
+    x132 += einsum(t1[np.ix_(so,sv)], (0, 1), v.oooO, (2, 0, 3, 4), (4, 3, 2, 1))
+    t3new += einsum(t2[np.ix_(so,so,sv,sV)], (0, 1, 2, 3), x132, (4, 0, 5, 6), (1, 5, 4, 2, 6, 3)) * -1.0
+    x133 = np.zeros((naocc, navir, nocc, nocc, nvir, nvir), dtype=np.float64)
+    x133 += einsum(t2[np.ix_(so,so,sv,sV)], (0, 1, 2, 3), x132, (4, 1, 5, 6), (4, 3, 0, 5, 6, 2))
+    del x132
+    t3new += einsum(x133, (0, 1, 2, 3, 4, 5), (3, 2, 0, 4, 5, 1))
+    t3new += einsum(x133, (0, 1, 2, 3, 4, 5), (2, 3, 0, 5, 4, 1))
+    del x133
+    x134 = np.zeros((naocc, nocc, nocc, nvir), dtype=np.float64)
+    x134 += einsum(t1[np.ix_(so,sv)], (0, 1), v.oooO, (2, 3, 0, 4), (4, 2, 3, 1))
+    t3new += einsum(t2[np.ix_(so,so,sv,sV)], (0, 1, 2, 3), x134, (4, 5, 1, 6), (5, 0, 4, 6, 2, 3)) * -1.0
+    t3new += einsum(t2[np.ix_(so,so,sv,sV)], (0, 1, 2, 3), x134, (4, 5, 0, 6), (1, 5, 4, 6, 2, 3)) * -1.0
+    del x134
+    x135 = np.zeros((naocc, nocc, nocc, nvir), dtype=np.float64)
+    x135 += einsum(t1[np.ix_(so,sv)], (0, 1), v.ovvO, (2, 1, 3, 4), (4, 0, 2, 3))
+    t3new += einsum(t2[np.ix_(so,so,sv,sV)], (0, 1, 2, 3), x135, (4, 5, 1, 6), (5, 0, 4, 6, 2, 3))
+    t3new += einsum(t2[np.ix_(so,so,sv,sV)], (0, 1, 2, 3), x135, (4, 5, 0, 6), (1, 5, 4, 6, 2, 3))
+    del x135
+    x136 = np.zeros((naocc, navir, nocc, nocc, nvir, nvir), dtype=np.float64)
+    x136 += einsum(t2[np.ix_(so,so,sv,sv)], (0, 1, 2, 3), x62, (4, 5, 6, 1), (4, 5, 6, 0, 2, 3))
+    t3new += einsum(x136, (0, 1, 2, 3, 4, 5), (2, 3, 0, 5, 4, 1)) * -1.0
+    t3new += einsum(x136, (0, 1, 2, 3, 4, 5), (3, 2, 0, 4, 5, 1)) * -1.0
+    del x136
+    x137 = np.zeros((naocc, navir, nocc, nocc, nocc, nvir), dtype=np.float64)
+    x137 += einsum(t2[np.ix_(so,so,sv,sV)], (0, 1, 2, 3), v.ovvO, (4, 2, 5, 6), (6, 3, 1, 0, 4, 5))
+    t3new += einsum(t1[np.ix_(so,sv)], (0, 1), x137, (2, 3, 4, 5, 0, 6), (4, 5, 2, 6, 1, 3))
+    del x137
+    x138 = np.zeros((naocc, navir, nocc, nocc, nocc, nvir), dtype=np.float64)
+    x138 += einsum(t2[np.ix_(so,so,sv,sv)], (0, 1, 2, 3), v.ovOV, (4, 3, 5, 6), (5, 6, 0, 1, 4, 2))
+    x139 = np.zeros((naocc, navir, nocc, nocc, nvir, nvir), dtype=np.float64)
+    x139 += einsum(t1[np.ix_(so,sv)], (0, 1), x138, (2, 3, 4, 5, 0, 6), (2, 3, 4, 5, 1, 6))
+    t3new += einsum(x139, (0, 1, 2, 3, 4, 5), (3, 2, 0, 4, 5, 1)) * -1.0
+    t3new += einsum(x139, (0, 1, 2, 3, 4, 5), (2, 3, 0, 5, 4, 1)) * -1.0
+    del x139
+    x140 = np.zeros((naocc, navir, nocc, nocc), dtype=np.float64)
+    x140 += einsum(t1[np.ix_(so,sv)], (0, 1), v.oOvV, (2, 3, 1, 4), (3, 4, 0, 2))
+    t3new += einsum(t2[np.ix_(so,so,sv,sv)], (0, 1, 2, 3), x140, (4, 5, 6, 1), (6, 0, 4, 3, 2, 5))
+    del x140
+    x141 = np.zeros((naocc, nocc, nocc, nvir), dtype=np.float64)
+    x141 += einsum(t1[np.ix_(so,sv)], (0, 1), v.oOvv, (2, 3, 4, 1), (3, 0, 2, 4))
+    t3new += einsum(t2[np.ix_(so,so,sv,sV)], (0, 1, 2, 3), x141, (4, 5, 0, 6), (1, 5, 4, 2, 6, 3))
+    x142 = np.zeros((naocc, navir, nocc, nocc, nvir, nvir), dtype=np.float64)
+    x142 += einsum(t2[np.ix_(so,so,sv,sV)], (0, 1, 2, 3), x141, (4, 5, 1, 6), (4, 3, 5, 0, 2, 6))
+    del x141
+    t3new += einsum(x142, (0, 1, 2, 3, 4, 5), (2, 3, 0, 5, 4, 1)) * -1.0
+    t3new += einsum(x142, (0, 1, 2, 3, 4, 5), (3, 2, 0, 4, 5, 1)) * -1.0
+    del x142
+    x143 = np.zeros((naocc, navir, nocc, nocc, nocc, nvir), dtype=np.float64)
+    x143 += einsum(t2[np.ix_(so,so,sv,sv)], (0, 1, 2, 3), v.oOvV, (4, 5, 3, 6), (5, 6, 0, 1, 4, 2))
+    t3new += einsum(t1[np.ix_(so,sv)], (0, 1), x143, (2, 3, 4, 5, 0, 6), (5, 4, 2, 1, 6, 3))
+    del x143
+    x144 = np.zeros((naocc, navir, nocc, nocc, nocc, nvir), dtype=np.float64)
+    x144 += einsum(t2[np.ix_(so,so,sv,sV)], (0, 1, 2, 3), v.oOvv, (4, 5, 6, 2), (5, 3, 1, 0, 4, 6))
+    t3new += einsum(t1[np.ix_(so,sv)], (0, 1), x144, (2, 3, 4, 5, 0, 6), (4, 5, 2, 1, 6, 3))
+    del x144
+    x145 = np.zeros((navir, nocc, nocc, nocc), dtype=np.float64)
+    x145 += einsum(t1[np.ix_(so,sv)], (0, 1), v.oovV, (2, 3, 1, 4), (4, 0, 2, 3))
+    t3new += einsum(t2[np.ix_(so,sO,sv,sv)], (0, 1, 2, 3), x145, (4, 5, 6, 0), (5, 6, 1, 3, 2, 4))
+    del x145
+    x146 = np.zeros((naocc, navir, nocc, nocc, nvir, nvir), dtype=np.float64)
+    x146 += einsum(t2[np.ix_(so,sO,sv,sV)], (0, 1, 2, 3), x36, (4, 5, 0, 6), (1, 3, 4, 5, 2, 6))
+    del x36
+    t3new += einsum(x146, (0, 1, 2, 3, 4, 5), (2, 3, 0, 5, 4, 1)) * -1.0
+    t3new += einsum(x146, (0, 1, 2, 3, 4, 5), (3, 2, 0, 4, 5, 1)) * -1.0
+    del x146
+    x147 = np.zeros((naocc, navir, nocc, nocc, nocc, nvir), dtype=np.float64)
+    x147 += einsum(t2[np.ix_(so,sO,sv,sV)], (0, 1, 2, 3), v.oooo, (4, 5, 6, 0), (1, 3, 4, 5, 6, 2))
+    x148 = np.zeros((naocc, navir, nocc, nocc, nvir, nvir), dtype=np.float64)
+    x148 += einsum(t1[np.ix_(so,sv)], (0, 1), x147, (2, 3, 0, 4, 5, 6), (2, 3, 4, 5, 1, 6))
+    del x147
+    t3new += einsum(x148, (0, 1, 2, 3, 4, 5), (2, 3, 0, 4, 5, 1))
+    t3new += einsum(x148, (0, 1, 2, 3, 4, 5), (3, 2, 0, 5, 4, 1))
+    del x148
+    x149 = np.zeros((naocc, navir, nocc, nocc, nocc, nvir), dtype=np.float64)
+    x149 += einsum(t2[np.ix_(so,sO,sv,sv)], (0, 1, 2, 3), v.oovV, (4, 5, 3, 6), (1, 6, 0, 4, 5, 2))
+    x150 = np.zeros((naocc, navir, nocc, nocc, nvir, nvir), dtype=np.float64)
+    x150 += einsum(t1[np.ix_(so,sv)], (0, 1), x149, (2, 3, 4, 0, 5, 6), (2, 3, 4, 5, 1, 6))
+    del x149
+    t3new += einsum(x150, (0, 1, 2, 3, 4, 5), (3, 2, 0, 4, 5, 1)) * -1.0
+    t3new += einsum(x150, (0, 1, 2, 3, 4, 5), (2, 3, 0, 5, 4, 1)) * -1.0
+    del x150
+    x151 = np.zeros((naocc, navir, nocc, nocc, nocc, nvir), dtype=np.float64)
+    x151 += einsum(t2[np.ix_(so,sO,sv,sV)], (0, 1, 2, 3), v.oovv, (4, 5, 6, 2), (1, 3, 0, 4, 5, 6))
+    x152 = np.zeros((naocc, navir, nocc, nocc, nvir, nvir), dtype=np.float64)
+    x152 += einsum(t1[np.ix_(so,sv)], (0, 1), x151, (2, 3, 4, 0, 5, 6), (2, 3, 4, 5, 1, 6))
+    del x151
+    t3new += einsum(x152, (0, 1, 2, 3, 4, 5), (3, 2, 0, 4, 5, 1)) * -1.0
+    t3new += einsum(x152, (0, 1, 2, 3, 4, 5), (2, 3, 0, 5, 4, 1)) * -1.0
+    del x152
+    x153 = np.zeros((naocc, navir, nocc, nocc, nocc, nvir), dtype=np.float64)
+    x153 += einsum(t2[np.ix_(so,sO,sv,sv)], (0, 1, 2, 3), v.oovV, (4, 5, 2, 6), (1, 6, 0, 4, 5, 3))
+    t3new += einsum(t1[np.ix_(so,sv)], (0, 1), x153, (2, 3, 4, 0, 5, 6), (4, 5, 2, 6, 1, 3))
+    del x153
+    x154 = np.zeros((naocc, navir, nocc, nocc, nvir, nvir), dtype=np.float64)
+    x154 += einsum(t2[np.ix_(so,sO,sv,sV)], (0, 1, 2, 3), x9, (4, 5, 0, 6), (1, 3, 4, 5, 2, 6))
+    t3new += einsum(x154, (0, 1, 2, 3, 4, 5), (2, 3, 0, 4, 5, 1)) * -1.0
+    t3new += einsum(x154, (0, 1, 2, 3, 4, 5), (3, 2, 0, 5, 4, 1)) * -1.0
+    del x154
+    x155 = np.zeros((navir, nocc, nocc, nocc), dtype=np.float64)
+    x155 += einsum(t1[np.ix_(so,sv)], (0, 1), v.ovoV, (2, 1, 3, 4), (4, 0, 3, 2))
+    t3new += einsum(t2[np.ix_(so,sO,sv,sv)], (0, 1, 2, 3), x155, (4, 5, 6, 0), (6, 5, 1, 3, 2, 4))
+    x156 = np.zeros((naocc, navir, nocc, nocc, nocc, nvir), dtype=np.float64)
+    x156 += einsum(t2[np.ix_(so,sO,sv,sv)], (0, 1, 2, 3), v.ovoV, (4, 3, 5, 6), (1, 6, 0, 5, 4, 2))
+    t3new += einsum(t1[np.ix_(so,sv)], (0, 1), x156, (2, 3, 4, 5, 0, 6), (5, 4, 2, 1, 6, 3))
+    del x156
+    x157 = np.zeros((naocc, navir, nocc, nocc, nocc, nvir), dtype=np.float64)
+    x157 += einsum(t2[np.ix_(so,sO,sv,sV)], (0, 1, 2, 3), v.ovov, (4, 5, 6, 2), (1, 3, 0, 4, 6, 5))
+    x158 = np.zeros((naocc, navir, nocc, nocc, nvir, nvir), dtype=np.float64)
+    x158 += einsum(t1[np.ix_(so,sv)], (0, 1), x157, (2, 3, 4, 5, 0, 6), (2, 3, 4, 5, 1, 6))
+    t3new += einsum(x158, (0, 1, 2, 3, 4, 5), (2, 3, 0, 4, 5, 1)) * -1.0
+    t3new += einsum(x158, (0, 1, 2, 3, 4, 5), (3, 2, 0, 5, 4, 1)) * -1.0
+    del x158
+    x159 = np.zeros((naocc, navir, nocc, nocc, nocc, nvir), dtype=np.float64)
+    x159 += einsum(t2[np.ix_(so,sO,sv,sv)], (0, 1, 2, 3), v.ovoV, (4, 2, 5, 6), (1, 6, 0, 5, 4, 3))
+    t3new += einsum(t1[np.ix_(so,sv)], (0, 1), x159, (2, 3, 4, 5, 0, 6), (5, 4, 2, 6, 1, 3))
+    del x159
+    x160 = np.zeros((naocc, navir, nocc, nocc), dtype=np.float64)
+    x160 += einsum(t1[np.ix_(so,sV)], (0, 1), v.oooO, (2, 3, 0, 4), (4, 1, 2, 3))
+    x161 = np.zeros((naocc, navir, nocc, nocc, nvir, nvir), dtype=np.float64)
+    x161 += einsum(t2[np.ix_(so,so,sv,sv)], (0, 1, 2, 3), x160, (4, 5, 6, 1), (4, 5, 0, 6, 2, 3))
+    del x160
+    t3new += einsum(x161, (0, 1, 2, 3, 4, 5), (2, 3, 0, 4, 5, 1))
+    t3new += einsum(x161, (0, 1, 2, 3, 4, 5), (3, 2, 0, 5, 4, 1))
+    del x161
+    x162 = np.zeros((naocc, navir, nocc, nocc), dtype=np.float64)
+    x162 += einsum(t1[np.ix_(so,sV)], (0, 1), v.oooO, (2, 0, 3, 4), (4, 1, 3, 2))
+    t3new += einsum(t2[np.ix_(so,so,sv,sv)], (0, 1, 2, 3), x162, (4, 5, 1, 6), (6, 0, 4, 3, 2, 5)) * -1.0
+    del x162
+    x163 = np.zeros((naocc, navir, nvir, nvir), dtype=np.float64)
+    x163 += einsum(t1[np.ix_(so,sV)], (0, 1), v.ovvO, (0, 2, 3, 4), (4, 1, 3, 2))
+    t3new += einsum(t2[np.ix_(so,so,sv,sv)], (0, 1, 2, 3), x163, (4, 5, 6, 2), (0, 1, 4, 6, 3, 5))
+    del x163
+    x164 = np.zeros((naocc, navir, nvir, nvir), dtype=np.float64)
+    x164 += einsum(t1[np.ix_(so,sV)], (0, 1), v.oOvv, (0, 2, 3, 4), (2, 1, 3, 4))
+    x165 = np.zeros((naocc, navir, nocc, nocc, nvir, nvir), dtype=np.float64)
+    x165 += einsum(t2[np.ix_(so,so,sv,sv)], (0, 1, 2, 3), x164, (4, 5, 6, 3), (4, 5, 0, 1, 2, 6))
+    del x164
+    t3new += einsum(x165, (0, 1, 2, 3, 4, 5), (2, 3, 0, 4, 5, 1)) * -1.0
+    t3new += einsum(x165, (0, 1, 2, 3, 4, 5), (3, 2, 0, 5, 4, 1)) * -1.0
+    del x165
+    x166 = np.zeros((navir, nocc, nocc, nocc), dtype=np.float64)
+    x166 += einsum(t1[np.ix_(so,sV)], (0, 1), v.oooo, (2, 3, 4, 0), (1, 2, 3, 4))
+    t3new += einsum(t2[np.ix_(so,sO,sv,sv)], (0, 1, 2, 3), x166, (4, 5, 0, 6), (6, 5, 1, 3, 2, 4)) * -1.0
+    del x166
+    x167 = np.zeros((navir, nocc, nvir, nvir), dtype=np.float64)
+    x167 += einsum(t1[np.ix_(so,sV)], (0, 1), v.oovv, (2, 0, 3, 4), (1, 2, 3, 4))
+    t3new += einsum(t2[np.ix_(so,sO,sv,sv)], (0, 1, 2, 3), x167, (4, 5, 6, 3), (5, 0, 1, 6, 2, 4))
+    t3new += einsum(t2[np.ix_(so,sO,sv,sv)], (0, 1, 2, 3), x167, (4, 5, 6, 2), (5, 0, 1, 3, 6, 4))
+    del x167
+    x168 = np.zeros((navir, nocc, nvir, nvir), dtype=np.float64)
+    x168 += einsum(t1[np.ix_(so,sV)], (0, 1), v.ovov, (2, 3, 0, 4), (1, 2, 3, 4))
+    t3new += einsum(t2[np.ix_(so,sO,sv,sv)], (0, 1, 2, 3), x168, (4, 5, 6, 2), (0, 5, 1, 3, 6, 4))
+    x169 = np.zeros((naocc, navir, nocc, nocc, nvir, nvir), dtype=np.float64)
+    x169 += einsum(t2[np.ix_(so,sO,sv,sv)], (0, 1, 2, 3), x168, (4, 5, 6, 3), (1, 4, 0, 5, 2, 6))
+    t3new += einsum(x169, (0, 1, 2, 3, 4, 5), (2, 3, 0, 4, 5, 1)) * -1.0
+    t3new += einsum(x169, (0, 1, 2, 3, 4, 5), (3, 2, 0, 5, 4, 1)) * -1.0
+    del x169
+    x170 = np.zeros((navir, nocc, nvir, nvir), dtype=np.float64)
+    x170 += einsum(t1[np.ix_(so,sv)], (0, 1), v.vvvV, (2, 1, 3, 4), (4, 0, 3, 2))
+    t3new += einsum(t2[np.ix_(so,sO,sv,sv)], (0, 1, 2, 3), x170, (4, 5, 2, 6), (0, 5, 1, 3, 6, 4)) * -1.0
+    x171 = np.zeros((naocc, navir, nocc, nocc, nvir, nvir), dtype=np.float64)
+    x171 += einsum(t2[np.ix_(so,sO,sv,sv)], (0, 1, 2, 3), x170, (4, 5, 3, 6), (1, 4, 5, 0, 2, 6))
+    del x170
+    t3new += einsum(x171, (0, 1, 2, 3, 4, 5), (2, 3, 0, 5, 4, 1))
+    t3new += einsum(x171, (0, 1, 2, 3, 4, 5), (3, 2, 0, 4, 5, 1))
+    del x171
+    x172 = np.zeros((navir, nocc, nvir, nvir), dtype=np.float64)
+    x172 += einsum(t1[np.ix_(so,sv)], (0, 1), v.vvvV, (2, 3, 1, 4), (4, 0, 2, 3))
+    t3new += einsum(t2[np.ix_(so,sO,sv,sv)], (0, 1, 2, 3), x172, (4, 5, 6, 3), (5, 0, 1, 6, 2, 4)) * -1.0
+    t3new += einsum(t2[np.ix_(so,sO,sv,sv)], (0, 1, 2, 3), x172, (4, 5, 6, 2), (5, 0, 1, 3, 6, 4)) * -1.0
+    del x172
+    x173 = np.zeros((naocc, navir, nocc, nvir, nvir, nvir), dtype=np.float64)
+    x173 += einsum(t2[np.ix_(so,sO,sv,sV)], (0, 1, 2, 3), v.vvvv, (4, 5, 6, 2), (1, 3, 0, 4, 5, 6))
+    x174 = np.zeros((naocc, navir, nocc, nocc, nvir, nvir), dtype=np.float64)
+    x174 += einsum(t1[np.ix_(so,sv)], (0, 1), x173, (2, 3, 4, 1, 5, 6), (2, 3, 0, 4, 5, 6))
+    del x173
+    t3new += einsum(x174, (0, 1, 2, 3, 4, 5), (2, 3, 0, 4, 5, 1))
+    t3new += einsum(x174, (0, 1, 2, 3, 4, 5), (3, 2, 0, 5, 4, 1))
+    del x174
+    x175 = np.zeros((naocc, navir, nocc, nocc), dtype=np.float64)
+    x175 += einsum(t1[np.ix_(sO,sv)], (0, 1), v.oovV, (2, 3, 1, 4), (0, 4, 2, 3))
+    x176 = np.zeros((naocc, navir, nocc, nocc, nvir, nvir), dtype=np.float64)
+    x176 += einsum(t2[np.ix_(so,so,sv,sv)], (0, 1, 2, 3), x175, (4, 5, 6, 1), (4, 5, 0, 6, 2, 3))
+    del x175
+    t3new += einsum(x176, (0, 1, 2, 3, 4, 5), (2, 3, 0, 4, 5, 1)) * -1.0
+    t3new += einsum(x176, (0, 1, 2, 3, 4, 5), (3, 2, 0, 5, 4, 1)) * -1.0
+    del x176
+    x177 = np.zeros((naocc, nocc, nocc, nvir), dtype=np.float64)
+    x177 += einsum(t1[np.ix_(sO,sv)], (0, 1), v.oovv, (2, 3, 4, 1), (0, 2, 3, 4))
+    t3new += einsum(t2[np.ix_(so,so,sv,sV)], (0, 1, 2, 3), x177, (4, 5, 1, 6), (5, 0, 4, 6, 2, 3))
+    t3new += einsum(t2[np.ix_(so,so,sv,sV)], (0, 1, 2, 3), x177, (4, 5, 0, 6), (1, 5, 4, 6, 2, 3))
+    del x177
+    x178 = np.zeros((naocc, navir, nocc, nocc), dtype=np.float64)
+    x178 += einsum(t1[np.ix_(sO,sv)], (0, 1), v.ovoV, (2, 1, 3, 4), (0, 4, 3, 2))
+    t3new += einsum(t2[np.ix_(so,so,sv,sv)], (0, 1, 2, 3), x178, (4, 5, 6, 1), (6, 0, 4, 3, 2, 5))
+    del x178
+    x179 = np.zeros((naocc, nocc, nocc, nvir), dtype=np.float64)
+    x179 += einsum(t1[np.ix_(sO,sv)], (0, 1), v.ovov, (2, 3, 4, 1), (0, 2, 4, 3))
+    t3new += einsum(t2[np.ix_(so,so,sv,sV)], (0, 1, 2, 3), x179, (4, 5, 0, 6), (1, 5, 4, 2, 6, 3))
+    x180 = np.zeros((naocc, navir, nocc, nocc, nvir, nvir), dtype=np.float64)
+    x180 += einsum(t2[np.ix_(so,so,sv,sV)], (0, 1, 2, 3), x179, (4, 5, 1, 6), (4, 3, 0, 5, 2, 6))
+    t3new += einsum(x180, (0, 1, 2, 3, 4, 5), (2, 3, 0, 4, 5, 1)) * -1.0
+    t3new += einsum(x180, (0, 1, 2, 3, 4, 5), (3, 2, 0, 5, 4, 1)) * -1.0
+    del x180
+    x181 = np.zeros((naocc, navir, nvir, nvir), dtype=np.float64)
+    x181 += einsum(t1[np.ix_(sO,sv)], (0, 1), v.vvvV, (2, 1, 3, 4), (0, 4, 3, 2))
+    t3new += einsum(t2[np.ix_(so,so,sv,sv)], (0, 1, 2, 3), x181, (4, 5, 2, 6), (0, 1, 4, 6, 3, 5)) * -1.0
+    del x181
+    x182 = np.zeros((naocc, navir, nvir, nvir), dtype=np.float64)
+    x182 += einsum(t1[np.ix_(sO,sv)], (0, 1), v.vvvV, (2, 3, 1, 4), (0, 4, 2, 3))
+    x183 = np.zeros((naocc, navir, nocc, nocc, nvir, nvir), dtype=np.float64)
+    x183 += einsum(t2[np.ix_(so,so,sv,sv)], (0, 1, 2, 3), x182, (4, 5, 6, 3), (4, 5, 0, 1, 2, 6))
+    del x182
+    t3new += einsum(x183, (0, 1, 2, 3, 4, 5), (3, 2, 0, 5, 4, 1))
+    t3new += einsum(x183, (0, 1, 2, 3, 4, 5), (2, 3, 0, 4, 5, 1))
+    del x183
+    x184 = np.zeros((naocc, nvir, nvir, nvir), dtype=np.float64)
+    x184 += einsum(t1[np.ix_(sO,sv)], (0, 1), v.vvvv, (2, 3, 4, 1), (0, 2, 3, 4))
+    t3new += einsum(t2[np.ix_(so,so,sv,sV)], (0, 1, 2, 3), x184, (4, 5, 2, 6), (1, 0, 4, 6, 5, 3)) * -1.0
+    del x184
+    x185 = np.zeros((naocc, navir, nocc, nocc, nocc, nvir), dtype=np.float64)
+    x185 += einsum(t2[np.ix_(so,sO,sV,sv)], (0, 1, 2, 3), v.oooo, (4, 5, 6, 0), (1, 2, 4, 5, 6, 3))
+    t3new += einsum(t1[np.ix_(so,sv)], (0, 1), x185, (2, 3, 0, 4, 5, 6), (5, 4, 2, 6, 1, 3)) * -1.0
+    del x185
+    x186 = np.zeros((naocc, navir, nocc, nocc, nocc, nvir), dtype=np.float64)
+    x186 += einsum(t2[np.ix_(so,sO,sV,sv)], (0, 1, 2, 3), v.oovv, (4, 5, 6, 3), (1, 2, 0, 4, 5, 6))
+    t3new += einsum(t1[np.ix_(so,sv)], (0, 1), x186, (2, 3, 4, 0, 5, 6), (4, 5, 2, 6, 1, 3))
+    del x186
+    x187 = np.zeros((naocc, navir, nocc, nocc, nocc, nvir), dtype=np.float64)
+    x187 += einsum(t2[np.ix_(so,sO,sV,sv)], (0, 1, 2, 3), v.ovov, (4, 5, 6, 3), (1, 2, 0, 4, 6, 5))
+    t3new += einsum(t1[np.ix_(so,sv)], (0, 1), x187, (2, 3, 4, 5, 0, 6), (4, 5, 2, 1, 6, 3))
+    x188 = np.zeros((naocc, navir, nocc, nvir, nvir, nvir), dtype=np.float64)
+    x188 += einsum(t2[np.ix_(so,sO,sV,sv)], (0, 1, 2, 3), v.vvvv, (4, 5, 6, 3), (1, 2, 0, 4, 5, 6))
+    t3new += einsum(t1[np.ix_(so,sv)], (0, 1), x188, (2, 3, 4, 1, 5, 6), (4, 0, 2, 6, 5, 3)) * -1.0
+    del x188
+    x189 = np.zeros((naocc, navir, nocc, nocc, nocc, nvir), dtype=np.float64)
+    x189 += einsum(v.ooov, (0, 1, 2, 3), t3[np.ix_(so,so,sO,sv,sv,sV)], (2, 4, 5, 3, 6, 7), (5, 7, 4, 0, 1, 6))
+    t3new += einsum(t1[np.ix_(so,sv)], (0, 1), x189, (2, 3, 4, 0, 5, 6), (5, 4, 2, 1, 6, 3)) * -1.0
+    del x189
+    x190 = np.zeros((naocc, navir, nocc, nocc, nocc, nvir), dtype=np.float64)
+    x190 += einsum(v.ooov, (0, 1, 2, 3), t3[np.ix_(so,so,sO,sv,sv,sV)], (1, 4, 5, 3, 6, 7), (5, 7, 4, 0, 2, 6))
+    t3new += einsum(t1[np.ix_(so,sv)], (0, 1), x190, (2, 3, 4, 5, 0, 6), (5, 4, 2, 1, 6, 3))
+    del x190
+    x191 = np.zeros((naocc, navir, nocc, nocc, nocc, nvir), dtype=np.float64)
+    x191 += einsum(v.ooov, (0, 1, 2, 3), t3[np.ix_(so,so,sO,sv,sv,sV)], (4, 1, 5, 3, 6, 7), (5, 7, 4, 0, 2, 6))
+    t3new += einsum(t1[np.ix_(so,sv)], (0, 1), x191, (2, 3, 4, 5, 0, 6), (4, 5, 2, 1, 6, 3))
+    del x191
+    x192 = np.zeros((naocc, navir, nocc, nocc, nocc, nvir), dtype=np.float64)
+    x192 += einsum(v.ooov, (0, 1, 2, 3), t3[np.ix_(so,so,sO,sv,sv,sV)], (1, 4, 5, 6, 3, 7), (5, 7, 4, 0, 2, 6))
+    t3new += einsum(t1[np.ix_(so,sv)], (0, 1), x192, (2, 3, 4, 5, 0, 6), (5, 4, 2, 6, 1, 3))
+    del x192
+    x193 = np.zeros((naocc, navir, nocc, nocc, nocc, nvir), dtype=np.float64)
+    x193 += einsum(v.ooov, (0, 1, 2, 3), t3[np.ix_(so,so,sO,sv,sv,sV)], (4, 2, 5, 3, 6, 7), (5, 7, 4, 0, 1, 6))
+    t3new += einsum(t1[np.ix_(so,sv)], (0, 1), x193, (2, 3, 4, 0, 5, 6), (4, 5, 2, 6, 1, 3))
+    del x193
+    x194 = np.zeros((naocc, navir, nocc, nocc, nocc, nvir), dtype=np.float64)
+    x194 += einsum(v.ooov, (0, 1, 2, 3), t3[np.ix_(so,so,sO,sv,sv,sV)], (4, 2, 5, 6, 3, 7), (5, 7, 4, 0, 1, 6))
+    t3new += einsum(t1[np.ix_(so,sv)], (0, 1), x194, (2, 3, 4, 0, 5, 6), (4, 5, 2, 6, 1, 3)) * -2.0
+    del x194
+    x195 = np.zeros((naocc, navir, nocc, nocc, nocc, nvir), dtype=np.float64)
+    x195 += einsum(v.ooov, (0, 1, 2, 3), t3[np.ix_(so,so,sO,sv,sv,sV)], (4, 1, 5, 6, 3, 7), (5, 7, 4, 0, 2, 6))
+    t3new += einsum(t1[np.ix_(so,sv)], (0, 1), x195, (2, 3, 4, 5, 0, 6), (4, 5, 2, 6, 1, 3))
+    del x195
+    x196 = np.zeros((naocc, naocc, nocc, nocc), dtype=np.float64)
+    x196 += einsum(t1[np.ix_(so,sv)], (0, 1), v.ovOO, (2, 1, 3, 4), (3, 4, 0, 2))
+    t3new += einsum(x196, (0, 1, 2, 3), t3[np.ix_(so,so,sO,sv,sv,sV)], (3, 4, 1, 5, 6, 7), (2, 4, 0, 5, 6, 7)) * 0.5
+    t3new += einsum(x196, (0, 1, 2, 3), t3[np.ix_(so,so,sO,sv,sv,sV)], (4, 3, 1, 5, 6, 7), (4, 2, 0, 5, 6, 7))
+    del x196
+    x197 = np.zeros((naocc, naocc, nocc, nocc), dtype=np.float64)
+    x197 += einsum(t1[np.ix_(so,sv)], (0, 1), v.oOvO, (2, 3, 1, 4), (3, 4, 0, 2))
+    t3new += einsum(x197, (0, 1, 2, 3), t3[np.ix_(so,so,sO,sv,sv,sV)], (3, 4, 1, 5, 6, 7), (2, 4, 0, 5, 6, 7)) * -0.5
+    del x197
+    x198 = np.zeros((navir, navir, nocc, nocc), dtype=np.float64)
+    x198 += einsum(t1[np.ix_(so,sv)], (0, 1), v.ovVV, (2, 1, 3, 4), (3, 4, 0, 2))
+    t3new += einsum(x198, (0, 1, 2, 3), t3[np.ix_(so,so,sO,sv,sv,sV)], (3, 4, 5, 6, 7, 1), (2, 4, 5, 6, 7, 0)) * -1.0
+    t3new += einsum(x198, (0, 1, 2, 3), t3[np.ix_(so,so,sO,sv,sv,sV)], (4, 3, 5, 6, 7, 1), (4, 2, 5, 6, 7, 0)) * -1.0
+    del x198
+    x199 = np.zeros((navir, navir, nocc, nocc), dtype=np.float64)
+    x199 += einsum(t1[np.ix_(so,sv)], (0, 1), v.oVvV, (2, 3, 1, 4), (3, 4, 0, 2))
+    t3new += einsum(x199, (0, 1, 2, 3), t3[np.ix_(so,so,sO,sv,sv,sV)], (3, 4, 5, 6, 7, 0), (2, 4, 5, 6, 7, 1))
+    del x199
+    x200 = np.zeros((naocc, navir, nocc, nocc, nocc, nvir), dtype=np.float64)
+    x200 += einsum(v.ovOO, (0, 1, 2, 3), t3[np.ix_(so,so,sO,sv,sv,sV)], (4, 5, 3, 1, 6, 7), (2, 7, 4, 5, 0, 6))
+    t3new += einsum(t1[np.ix_(so,sv)], (0, 1), x200, (2, 3, 4, 5, 0, 6), (4, 5, 2, 1, 6, 3))
+    del x200
+    x201 = np.zeros((naocc, navir, nocc, nocc, nocc, nvir), dtype=np.float64)
+    x201 += einsum(v.oOvO, (0, 1, 2, 3), t3[np.ix_(so,so,sO,sv,sv,sV)], (4, 5, 3, 2, 6, 7), (1, 7, 4, 5, 0, 6))
+    t3new += einsum(t1[np.ix_(so,sv)], (0, 1), x201, (2, 3, 4, 5, 0, 6), (4, 5, 2, 1, 6, 3)) * -1.0
+    del x201
+    x202 = np.zeros((naocc, navir, nocc, nocc, nocc, nvir), dtype=np.float64)
+    x202 += einsum(v.ovOO, (0, 1, 2, 3), t3[np.ix_(so,so,sO,sv,sv,sV)], (4, 5, 3, 6, 1, 7), (2, 7, 4, 5, 0, 6))
+    t3new += einsum(t1[np.ix_(so,sv)], (0, 1), x202, (2, 3, 4, 5, 0, 6), (4, 5, 2, 6, 1, 3))
+    del x202
+    x203 = np.zeros((naocc, naocc), dtype=np.float64)
+    x203 += einsum(t1[np.ix_(so,sv)], (0, 1), v.ovOO, (0, 1, 2, 3), (2, 3))
+    t3new += einsum(x203, (0, 1), t3[np.ix_(so,so,sO,sv,sv,sV)], (2, 3, 1, 4, 5, 6), (2, 3, 0, 4, 5, 6)) * -2.0
+    del x203
+    x204 = np.zeros((naocc, naocc), dtype=np.float64)
+    x204 += einsum(t1[np.ix_(so,sv)], (0, 1), v.oOvO, (0, 2, 1, 3), (2, 3))
+    t3new += einsum(x204, (0, 1), t3[np.ix_(so,so,sO,sv,sv,sV)], (2, 3, 1, 4, 5, 6), (2, 3, 0, 4, 5, 6))
+    del x204
+    x205 = np.zeros((naocc, navir, nocc, nocc, nocc, nvir), dtype=np.float64)
+    x205 += einsum(v.ovvv, (0, 1, 2, 3), t3[np.ix_(so,so,sO,sv,sv,sV)], (4, 5, 6, 1, 3, 7), (6, 7, 4, 5, 0, 2))
+    t3new += einsum(t1[np.ix_(so,sv)], (0, 1), x205, (2, 3, 4, 5, 0, 6), (4, 5, 2, 1, 6, 3)) * -1.0
+    del x205
+    x206 = np.zeros((naocc, navir, nocc, nocc, nocc, nvir), dtype=np.float64)
+    x206 += einsum(v.ovVV, (0, 1, 2, 3), t3[np.ix_(so,so,sO,sv,sv,sV)], (4, 5, 6, 1, 7, 3), (6, 2, 4, 5, 0, 7))
+    t3new += einsum(t1[np.ix_(so,sv)], (0, 1), x206, (2, 3, 4, 5, 0, 6), (4, 5, 2, 1, 6, 3)) * -0.5
+    del x206
+    x207 = np.zeros((naocc, navir, nocc, nocc, nocc, nvir), dtype=np.float64)
+    x207 += einsum(v.oVvV, (0, 1, 2, 3), t3[np.ix_(so,so,sO,sv,sv,sV)], (4, 5, 6, 2, 7, 1), (6, 3, 4, 5, 0, 7))
+    t3new += einsum(t1[np.ix_(so,sv)], (0, 1), x207, (2, 3, 4, 5, 0, 6), (4, 5, 2, 1, 6, 3)) * 0.5
+    del x207
+    x208 = np.zeros((naocc, navir, nocc, nocc, nocc, nvir), dtype=np.float64)
+    x208 += einsum(v.ovvv, (0, 1, 2, 3), t3[np.ix_(so,so,sO,sv,sv,sV)], (4, 5, 6, 3, 1, 7), (6, 7, 4, 5, 0, 2))
+    t3new += einsum(t1[np.ix_(so,sv)], (0, 1), x208, (2, 3, 4, 5, 0, 6), (4, 5, 2, 6, 1, 3)) * -1.0
+    del x208
+    x209 = np.zeros((naocc, navir, nocc, nocc, nocc, nvir), dtype=np.float64)
+    x209 += einsum(v.ovVV, (0, 1, 2, 3), t3[np.ix_(so,so,sO,sv,sv,sV)], (4, 5, 6, 7, 1, 3), (6, 2, 4, 5, 0, 7))
+    t3new += einsum(t1[np.ix_(so,sv)], (0, 1), x209, (2, 3, 4, 5, 0, 6), (4, 5, 2, 6, 1, 3)) * -1.0
+    del x209
+    x210 = np.zeros((navir, navir), dtype=np.float64)
+    x210 += einsum(t1[np.ix_(so,sv)], (0, 1), v.ovVV, (0, 1, 2, 3), (2, 3))
+    t3new += einsum(x210, (0, 1), t3[np.ix_(so,so,sO,sv,sv,sV)], (2, 3, 4, 5, 6, 1), (2, 3, 4, 5, 6, 0)) * 2.0
+    del x210
+    x211 = np.zeros((navir, navir), dtype=np.float64)
+    x211 += einsum(t1[np.ix_(so,sv)], (0, 1), v.oVvV, (0, 2, 1, 3), (2, 3))
+    t3new += einsum(x211, (0, 1), t3[np.ix_(so,so,sO,sv,sv,sV)], (2, 3, 4, 5, 6, 0), (2, 3, 4, 5, 6, 1)) * -1.0
+    del x211
+    x212 = np.zeros((navir, navir, nocc, nocc), dtype=np.float64)
+    x212 += einsum(t1[np.ix_(so,sV)], (0, 1), v.oooV, (2, 0, 3, 4), (1, 4, 3, 2))
+    t3new += einsum(x212, (0, 1, 2, 3), t3[np.ix_(so,so,sO,sv,sv,sV)], (2, 4, 5, 6, 7, 1), (3, 4, 5, 6, 7, 0)) * -1.0
+    del x212
+    x213 = np.zeros((navir, navir, nocc, nocc), dtype=np.float64)
+    x213 += einsum(t1[np.ix_(so,sV)], (0, 1), v.oooV, (2, 3, 0, 4), (1, 4, 2, 3))
+    t3new += einsum(x213, (0, 1, 2, 3), t3[np.ix_(so,so,sO,sv,sv,sV)], (3, 4, 5, 6, 7, 1), (2, 4, 5, 6, 7, 0))
+    t3new += einsum(x213, (0, 1, 2, 3), t3[np.ix_(so,so,sO,sv,sv,sV)], (4, 3, 5, 6, 7, 1), (4, 2, 5, 6, 7, 0))
+    del x213
+    x214 = np.zeros((naocc, naocc, navir, navir), dtype=np.float64)
+    x214 += einsum(t1[np.ix_(so,sV)], (0, 1), v.oVOO, (0, 2, 3, 4), (3, 4, 1, 2))
+    t3new += einsum(x214, (0, 1, 2, 3), t3[np.ix_(so,so,sO,sv,sv,sV)], (4, 5, 1, 6, 7, 3), (4, 5, 0, 6, 7, 2))
+    del x214
+    x215 = np.zeros((naocc, naocc, navir, navir), dtype=np.float64)
+    x215 += einsum(t1[np.ix_(so,sV)], (0, 1), v.oOOV, (0, 2, 3, 4), (3, 2, 1, 4))
+    x216 = np.zeros((naocc, navir, nocc, nocc, nvir, nvir), dtype=np.float64)
+    x216 += einsum(x215, (0, 1, 2, 3), t3[np.ix_(so,so,sO,sv,sv,sV)], (4, 5, 0, 6, 7, 3), (1, 2, 4, 5, 6, 7))
+    del x215
+    t3new += einsum(x216, (0, 1, 2, 3, 4, 5), (2, 3, 0, 4, 5, 1)) * -1.0
+    t3new += einsum(x216, (0, 1, 2, 3, 4, 5), (3, 2, 0, 5, 4, 1)) * -1.0
+    del x216
+    x217 = np.zeros((navir, navir, nvir, nvir), dtype=np.float64)
+    x217 += einsum(t1[np.ix_(so,sV)], (0, 1), v.oVvv, (0, 2, 3, 4), (1, 2, 3, 4))
+    t3new += einsum(x217, (0, 1, 2, 3), t3[np.ix_(so,so,sO,sv,sv,sV)], (4, 5, 6, 3, 7, 1), (4, 5, 6, 2, 7, 0)) * -0.5
+    t3new += einsum(x217, (0, 1, 2, 3), t3[np.ix_(so,so,sO,sv,sv,sV)], (4, 5, 6, 7, 3, 1), (4, 5, 6, 7, 2, 0)) * -1.0
+    del x217
+    x218 = np.zeros((navir, navir, nvir, nvir), dtype=np.float64)
+    x218 += einsum(t1[np.ix_(so,sV)], (0, 1), v.ovvV, (0, 2, 3, 4), (1, 4, 3, 2))
+    t3new += einsum(x218, (0, 1, 2, 3), t3[np.ix_(so,so,sO,sv,sv,sV)], (4, 5, 6, 3, 7, 1), (4, 5, 6, 2, 7, 0)) * 0.5
+    del x218
+    x219 = np.zeros((naocc, naocc, nocc, nocc), dtype=np.float64)
+    x219 += einsum(t1[np.ix_(sO,sv)], (0, 1), v.oovO, (2, 3, 1, 4), (0, 4, 2, 3))
+    t3new += einsum(x219, (0, 1, 2, 3), t3[np.ix_(so,so,sO,sv,sv,sV)], (3, 4, 1, 5, 6, 7), (2, 4, 0, 5, 6, 7)) * 0.5
+    t3new += einsum(x219, (0, 1, 2, 3), t3[np.ix_(so,so,sO,sv,sv,sV)], (4, 3, 1, 5, 6, 7), (4, 2, 0, 5, 6, 7))
+    del x219
+    x220 = np.zeros((naocc, naocc, nocc, nocc), dtype=np.float64)
+    x220 += einsum(t1[np.ix_(sO,sv)], (0, 1), v.ovoO, (2, 1, 3, 4), (0, 4, 3, 2))
+    t3new += einsum(x220, (0, 1, 2, 3), t3[np.ix_(so,so,sO,sv,sv,sV)], (3, 4, 1, 5, 6, 7), (2, 4, 0, 5, 6, 7)) * -0.5
+    del x220
+    x221 = np.zeros((naocc, naocc, nvir, nvir), dtype=np.float64)
+    x221 += einsum(t1[np.ix_(sO,sv)], (0, 1), v.vvvO, (2, 3, 1, 4), (0, 4, 2, 3))
+    t3new += einsum(x221, (0, 1, 2, 3), t3[np.ix_(so,so,sO,sv,sv,sV)], (4, 5, 1, 3, 6, 7), (4, 5, 0, 2, 6, 7)) * -1.0
+    t3new += einsum(x221, (0, 1, 2, 3), t3[np.ix_(so,so,sO,sv,sv,sV)], (4, 5, 1, 6, 3, 7), (4, 5, 0, 6, 2, 7)) * -1.0
+    del x221
+    x222 = np.zeros((naocc, naocc, nvir, nvir), dtype=np.float64)
+    x222 += einsum(t1[np.ix_(sO,sv)], (0, 1), v.vvvO, (2, 1, 3, 4), (0, 4, 3, 2))
+    t3new += einsum(x222, (0, 1, 2, 3), t3[np.ix_(so,so,sO,sv,sv,sV)], (4, 5, 1, 2, 6, 7), (4, 5, 0, 3, 6, 7))
+    del x222
+    x223 = np.zeros((naocc, naocc, navir, navir), dtype=np.float64)
+    x223 += einsum(t1[np.ix_(sO,sv)], (0, 1), v.vOVV, (1, 2, 3, 4), (0, 2, 3, 4))
+    t3new += einsum(x223, (0, 1, 2, 3), t3[np.ix_(so,so,sO,sv,sv,sV)], (4, 5, 1, 6, 7, 3), (4, 5, 0, 6, 7, 2)) * -1.0
+    del x223
+    x224 = np.zeros((naocc, naocc, navir, navir), dtype=np.float64)
+    x224 += einsum(t1[np.ix_(sO,sv)], (0, 1), v.vVOV, (1, 2, 3, 4), (0, 3, 4, 2))
+    x225 = np.zeros((naocc, navir, nocc, nocc, nvir, nvir), dtype=np.float64)
+    x225 += einsum(x224, (0, 1, 2, 3), t3[np.ix_(so,so,sO,sv,sv,sV)], (4, 5, 1, 6, 7, 2), (0, 3, 4, 5, 6, 7))
+    del x224
+    t3new += einsum(x225, (0, 1, 2, 3, 4, 5), (2, 3, 0, 4, 5, 1))
+    t3new += einsum(x225, (0, 1, 2, 3, 4, 5), (3, 2, 0, 5, 4, 1))
+    del x225
+    x226 = np.zeros((navir, nocc, nocc, nvir), dtype=np.float64)
+    x226 += einsum(t1[np.ix_(so,sv)], (0, 1), v.oooV, (2, 0, 3, 4), (4, 3, 2, 1))
+    t3new += einsum(x226, (0, 1, 2, 3), t3[np.ix_(so,so,sO,sv,sV,sV)], (4, 1, 5, 6, 7, 0), (4, 2, 5, 6, 3, 7))
+    del x226
+    x227 = np.zeros((navir, nocc, nocc, nvir), dtype=np.float64)
+    x227 += einsum(t1[np.ix_(so,sv)], (0, 1), v.oVvv, (2, 3, 4, 1), (3, 0, 2, 4))
+    t3new += einsum(x227, (0, 1, 2, 3), t3[np.ix_(so,so,sO,sv,sV,sV)], (4, 2, 5, 6, 7, 0), (4, 1, 5, 6, 3, 7)) * -1.0
+    del x227
+    x228 = np.zeros((naocc, naocc, navir, nvir), dtype=np.float64)
+    x228 += einsum(t1[np.ix_(so,sv)], (0, 1), v.oOOV, (0, 2, 3, 4), (3, 2, 4, 1))
+    t3new += einsum(x228, (0, 1, 2, 3), t3[np.ix_(so,so,sO,sv,sV,sV)], (4, 5, 0, 6, 7, 2), (5, 4, 1, 3, 6, 7))
+    del x228
+    x229 = np.zeros((naocc, naocc, navir, nvir), dtype=np.float64)
+    x229 += einsum(t1[np.ix_(sO,sv)], (0, 1), v.vvOV, (2, 1, 3, 4), (0, 3, 4, 2))
+    t3new += einsum(x229, (0, 1, 2, 3), t3[np.ix_(so,so,sO,sv,sV,sV)], (4, 5, 1, 6, 7, 2), (5, 4, 0, 3, 6, 7)) * -1.0
+    del x229
+    x230 = np.zeros((naocc, navir, navir, nocc), dtype=np.float64)
+    x230 += einsum(t1[np.ix_(so,sv)], (0, 1), v.vVOV, (1, 2, 3, 4), (3, 4, 2, 0))
+    t3new += einsum(x230, (0, 1, 2, 3), t3[np.ix_(so,sO,sO,sv,sv,sV)], (4, 5, 0, 6, 7, 1), (3, 4, 5, 7, 6, 2)) * -1.0
+    del x230
+    x231 = np.zeros((naocc, navir, navir, nocc), dtype=np.float64)
+    x231 += einsum(t1[np.ix_(so,sV)], (0, 1), v.ooOV, (2, 0, 3, 4), (3, 1, 4, 2))
+    t3new += einsum(x231, (0, 1, 2, 3), t3[np.ix_(so,sO,sO,sv,sv,sV)], (4, 5, 0, 6, 7, 2), (3, 4, 5, 7, 6, 1))
+    del x231
+    x232 = np.zeros((naocc, navir, nocc, nvir), dtype=np.float64)
+    x232 += einsum(t1[np.ix_(so,sv)], (0, 1), v.ooOV, (2, 0, 3, 4), (3, 4, 2, 1))
+    t3new += einsum(x232, (0, 1, 2, 3), t3[np.ix_(so,sO,sO,sv,sV,sV)], (4, 5, 0, 6, 7, 1), (2, 4, 5, 3, 6, 7)) * -1.0
+    del x232
+    x233 = np.zeros((naocc, navir, nocc, nvir), dtype=np.float64)
+    x233 += einsum(t1[np.ix_(so,sv)], (0, 1), v.vvOV, (2, 1, 3, 4), (3, 4, 0, 2))
+    t3new += einsum(x233, (0, 1, 2, 3), t3[np.ix_(so,sO,sO,sv,sV,sV)], (4, 5, 0, 6, 7, 1), (2, 4, 5, 3, 6, 7))
+    del x233
+    x234 = np.zeros((naocc, nocc, nocc, nvir), dtype=np.float64)
+    x234 += einsum(t2[np.ix_(so,so,sv,sv)], (0, 1, 2, 3), v.ovoO, (1, 3, 4, 5), (5, 0, 4, 2))
+    t3new += einsum(t2[np.ix_(so,so,sv,sV)], (0, 1, 2, 3), x234, (4, 5, 0, 6), (1, 5, 4, 2, 6, 3)) * 2.0
+    x235 = np.zeros((naocc, navir, nocc, nocc, nvir, nvir), dtype=np.float64)
+    x235 += einsum(t2[np.ix_(so,so,sv,sV)], (0, 1, 2, 3), x234, (4, 5, 1, 6), (4, 3, 0, 5, 2, 6))
+    del x234
+    t3new += einsum(x235, (0, 1, 2, 3, 4, 5), (3, 2, 0, 5, 4, 1)) * -2.0
+    t3new += einsum(x235, (0, 1, 2, 3, 4, 5), (2, 3, 0, 4, 5, 1)) * -2.0
+    del x235
+    x236 = np.zeros((naocc, navir, nocc, nocc), dtype=np.float64)
+    x236 += einsum(t2[np.ix_(so,so,sv,sV)], (0, 1, 2, 3), v.ovoO, (4, 2, 1, 5), (5, 3, 0, 4))
+    x237 = np.zeros((naocc, navir, nocc, nocc, nvir, nvir), dtype=np.float64)
+    x237 += einsum(t2[np.ix_(so,so,sv,sv)], (0, 1, 2, 3), x236, (4, 5, 6, 1), (4, 5, 6, 0, 2, 3))
+    del x236
+    t3new += einsum(x237, (0, 1, 2, 3, 4, 5), (3, 2, 0, 4, 5, 1))
+    t3new += einsum(x237, (0, 1, 2, 3, 4, 5), (2, 3, 0, 5, 4, 1))
+    del x237
+    x238 = np.zeros((naocc, nocc, nocc, nvir), dtype=np.float64)
+    x238 += einsum(t2[np.ix_(so,so,sv,sv)], (0, 1, 2, 3), v.ovoO, (1, 2, 4, 5), (5, 0, 4, 3))
+    t3new += einsum(t2[np.ix_(so,so,sv,sV)], (0, 1, 2, 3), x238, (4, 5, 0, 6), (1, 5, 4, 2, 6, 3)) * -1.0
+    x239 = np.zeros((naocc, navir, nocc, nocc, nvir, nvir), dtype=np.float64)
+    x239 += einsum(t2[np.ix_(so,so,sv,sV)], (0, 1, 2, 3), x238, (4, 5, 1, 6), (4, 3, 0, 5, 2, 6))
+    del x238
+    t3new += einsum(x239, (0, 1, 2, 3, 4, 5), (3, 2, 0, 5, 4, 1))
+    t3new += einsum(x239, (0, 1, 2, 3, 4, 5), (2, 3, 0, 4, 5, 1))
+    del x239
+    x240 = np.zeros((naocc, nocc, nocc, nvir), dtype=np.float64)
+    x240 += einsum(t2[np.ix_(so,so,sv,sv)], (0, 1, 2, 3), v.ovoO, (4, 3, 1, 5), (5, 0, 4, 2))
+    t3new += einsum(t2[np.ix_(so,so,sv,sV)], (0, 1, 2, 3), x240, (4, 5, 0, 6), (1, 5, 4, 2, 6, 3)) * -1.0
+    x241 = np.zeros((naocc, navir, nocc, nocc, nvir, nvir), dtype=np.float64)
+    x241 += einsum(t2[np.ix_(so,so,sv,sV)], (0, 1, 2, 3), x240, (4, 5, 1, 6), (4, 3, 0, 5, 2, 6))
+    del x240
+    t3new += einsum(x241, (0, 1, 2, 3, 4, 5), (3, 2, 0, 5, 4, 1))
+    t3new += einsum(x241, (0, 1, 2, 3, 4, 5), (2, 3, 0, 4, 5, 1))
+    del x241
+    x242 = np.zeros((naocc, nocc, nocc, nvir), dtype=np.float64)
+    x242 += einsum(t2[np.ix_(so,so,sv,sv)], (0, 1, 2, 3), v.ovoO, (4, 2, 1, 5), (5, 0, 4, 3))
+    t3new += einsum(t2[np.ix_(so,so,sv,sV)], (0, 1, 2, 3), x242, (4, 5, 1, 6), (5, 0, 4, 6, 2, 3)) * -1.0
+    t3new += einsum(t2[np.ix_(so,so,sv,sV)], (0, 1, 2, 3), x242, (4, 5, 0, 6), (1, 5, 4, 6, 2, 3)) * -1.0
+    del x242
+    x243 = np.zeros((naocc, navir, nvir, nvir), dtype=np.float64)
+    x243 += einsum(t2[np.ix_(so,so,sv,sV)], (0, 1, 2, 3), v.ovoO, (0, 4, 1, 5), (5, 3, 2, 4))
+    x244 = np.zeros((naocc, navir, nocc, nocc, nvir, nvir), dtype=np.float64)
+    x244 += einsum(t2[np.ix_(so,so,sv,sv)], (0, 1, 2, 3), x243, (4, 5, 6, 3), (4, 5, 0, 1, 6, 2))
+    del x243
+    t3new += einsum(x244, (0, 1, 2, 3, 4, 5), (3, 2, 0, 4, 5, 1)) * 0.5
+    t3new += einsum(x244, (0, 1, 2, 3, 4, 5), (2, 3, 0, 5, 4, 1))
+    t3new += einsum(x244, (0, 1, 2, 3, 4, 5), (3, 2, 0, 4, 5, 1)) * 0.5
+    del x244
+    x245 = np.zeros((naocc, navir, nvir, nvir), dtype=np.float64)
+    x245 += einsum(t2[np.ix_(so,so,sv,sV)], (0, 1, 2, 3), v.ovoO, (1, 4, 0, 5), (5, 3, 2, 4))
+    x246 = np.zeros((naocc, navir, nocc, nocc, nvir, nvir), dtype=np.float64)
+    x246 += einsum(t2[np.ix_(so,so,sv,sv)], (0, 1, 2, 3), x245, (4, 5, 6, 3), (4, 5, 0, 1, 6, 2))
+    del x245
+    t3new += einsum(x246, (0, 1, 2, 3, 4, 5), (3, 2, 0, 4, 5, 1)) * -0.5
+    t3new += einsum(x246, (0, 1, 2, 3, 4, 5), (3, 2, 0, 4, 5, 1)) * -0.5
+    del x246
+    x247 = np.zeros((naocc, navir, nocc, nocc), dtype=np.float64)
+    x247 += einsum(t2[np.ix_(so,so,sv,sV)], (0, 1, 2, 3), v.ovoO, (1, 2, 4, 5), (5, 3, 0, 4))
+    t3new += einsum(t2[np.ix_(so,so,sv,sv)], (0, 1, 2, 3), x247, (4, 5, 6, 1), (6, 0, 4, 3, 2, 5)) * -1.0
+    del x247
+    x248 = np.zeros((naocc, navir, nocc, nocc), dtype=np.float64)
+    x248 += einsum(t2[np.ix_(so,so,sv,sV)], (0, 1, 2, 3), v.ovoO, (4, 2, 0, 5), (5, 3, 1, 4))
+    t3new += einsum(t2[np.ix_(so,so,sv,sv)], (0, 1, 2, 3), x248, (4, 5, 6, 1), (6, 0, 4, 3, 2, 5)) * -1.0
+    del x248
+    x249 = np.zeros((naocc, navir, nocc, nocc), dtype=np.float64)
+    x249 += einsum(t2[np.ix_(so,so,sv,sV)], (0, 1, 2, 3), v.ovoO, (0, 2, 4, 5), (5, 3, 1, 4))
+    t3new += einsum(t2[np.ix_(so,so,sv,sv)], (0, 1, 2, 3), x249, (4, 5, 6, 1), (6, 0, 4, 3, 2, 5)) * 2.0
+    del x249
+    x250 = np.zeros((naocc, nvir, nvir, nvir), dtype=np.float64)
+    x250 += einsum(t2[np.ix_(so,so,sv,sv)], (0, 1, 2, 3), v.ovoO, (1, 4, 0, 5), (5, 2, 3, 4))
+    t3new += einsum(t2[np.ix_(so,so,sv,sV)], (0, 1, 2, 3), x250, (4, 5, 6, 2), (1, 0, 4, 5, 6, 3)) * -1.0
+    del x250
+    x251 = np.zeros((naocc, navir, nocc, nocc, nvir, nvir), dtype=np.float64)
+    x251 += einsum(t2[np.ix_(so,sO,sv,sV)], (0, 1, 2, 3), x49, (4, 5, 0, 6), (1, 3, 4, 5, 2, 6))
+    del x49
+    t3new += einsum(x251, (0, 1, 2, 3, 4, 5), (2, 3, 0, 5, 4, 1))
+    t3new += einsum(x251, (0, 1, 2, 3, 4, 5), (3, 2, 0, 4, 5, 1))
+    del x251
+    x252 = np.zeros((naocc, navir, nocc, nocc), dtype=np.float64)
+    x252 += einsum(t2[np.ix_(so,sO,sv,sV)], (0, 1, 2, 3), v.ooov, (4, 5, 0, 2), (1, 3, 4, 5))
+    x253 = np.zeros((naocc, navir, nocc, nocc, nvir, nvir), dtype=np.float64)
+    x253 += einsum(t2[np.ix_(so,so,sv,sv)], (0, 1, 2, 3), x252, (4, 5, 6, 1), (4, 5, 0, 6, 2, 3))
+    del x252
+    t3new += einsum(x253, (0, 1, 2, 3, 4, 5), (2, 3, 0, 4, 5, 1)) * -2.0
+    t3new += einsum(x253, (0, 1, 2, 3, 4, 5), (3, 2, 0, 5, 4, 1)) * -2.0
+    del x253
+    x254 = np.zeros((naocc, navir, nocc, nocc, nvir, nvir), dtype=np.float64)
+    x254 += einsum(t2[np.ix_(so,sO,sv,sV)], (0, 1, 2, 3), x43, (4, 5, 0, 6), (1, 3, 4, 5, 2, 6))
+    del x43
+    t3new += einsum(x254, (0, 1, 2, 3, 4, 5), (2, 3, 0, 4, 5, 1))
+    t3new += einsum(x254, (0, 1, 2, 3, 4, 5), (3, 2, 0, 5, 4, 1))
+    del x254
+    x255 = np.zeros((naocc, navir, nocc, nocc, nvir, nvir), dtype=np.float64)
+    x255 += einsum(t2[np.ix_(so,sO,sv,sV)], (0, 1, 2, 3), x45, (4, 5, 0, 6), (1, 3, 4, 5, 2, 6))
+    del x45
+    t3new += einsum(x255, (0, 1, 2, 3, 4, 5), (2, 3, 0, 5, 4, 1)) * -2.0
+    t3new += einsum(x255, (0, 1, 2, 3, 4, 5), (3, 2, 0, 4, 5, 1)) * -2.0
+    del x255
+    x256 = np.zeros((naocc, navir, nocc, nocc), dtype=np.float64)
+    x256 += einsum(t2[np.ix_(so,sO,sv,sV)], (0, 1, 2, 3), v.ooov, (4, 0, 5, 2), (1, 3, 4, 5))
+    x257 = np.zeros((naocc, navir, nocc, nocc, nvir, nvir), dtype=np.float64)
+    x257 += einsum(t2[np.ix_(so,so,sv,sv)], (0, 1, 2, 3), x256, (4, 5, 6, 1), (4, 5, 0, 6, 2, 3))
+    del x256
+    t3new += einsum(x257, (0, 1, 2, 3, 4, 5), (2, 3, 0, 4, 5, 1))
+    t3new += einsum(x257, (0, 1, 2, 3, 4, 5), (3, 2, 0, 5, 4, 1))
+    del x257
+    x258 = np.zeros((naocc, navir, nocc, nocc, nvir, nvir), dtype=np.float64)
+    x258 += einsum(t2[np.ix_(so,sO,sv,sV)], (0, 1, 2, 3), x47, (4, 5, 0, 6), (1, 3, 4, 5, 2, 6))
+    del x47
+    t3new += einsum(x258, (0, 1, 2, 3, 4, 5), (2, 3, 0, 5, 4, 1))
+    t3new += einsum(x258, (0, 1, 2, 3, 4, 5), (3, 2, 0, 4, 5, 1))
+    del x258
+    x259 = np.zeros((naocc, navir, nocc, nocc, nocc, nocc), dtype=np.float64)
+    x259 += einsum(t2[np.ix_(so,sO,sv,sV)], (0, 1, 2, 3), v.ooov, (4, 5, 6, 2), (1, 3, 0, 4, 5, 6))
+    x260 = np.zeros((naocc, navir, nocc, nocc, nvir, nvir), dtype=np.float64)
+    x260 += einsum(t2[np.ix_(so,so,sv,sv)], (0, 1, 2, 3), x259, (4, 5, 6, 7, 0, 1), (4, 5, 6, 7, 2, 3))
+    t3new += einsum(x260, (0, 1, 2, 3, 4, 5), (2, 3, 0, 5, 4, 1))
+    t3new += einsum(x260, (0, 1, 2, 3, 4, 5), (3, 2, 0, 4, 5, 1))
+    del x260
+    x261 = np.zeros((naocc, nocc, nocc, nvir), dtype=np.float64)
+    x261 += einsum(t2[np.ix_(so,sO,sv,sv)], (0, 1, 2, 3), v.ooov, (4, 0, 5, 3), (1, 4, 5, 2))
+    t3new += einsum(t2[np.ix_(so,so,sv,sV)], (0, 1, 2, 3), x261, (4, 5, 0, 6), (1, 5, 4, 2, 6, 3)) * -1.0
+    x262 = np.zeros((naocc, navir, nocc, nocc, nvir, nvir), dtype=np.float64)
+    x262 += einsum(t2[np.ix_(so,so,sv,sV)], (0, 1, 2, 3), x261, (4, 5, 1, 6), (4, 3, 0, 5, 6, 2))
+    del x261
+    t3new += einsum(x262, (0, 1, 2, 3, 4, 5), (2, 3, 0, 5, 4, 1))
+    t3new += einsum(x262, (0, 1, 2, 3, 4, 5), (3, 2, 0, 4, 5, 1))
+    del x262
+    x263 = np.zeros((navir, nocc, nocc, nocc), dtype=np.float64)
+    x263 += einsum(t2[np.ix_(so,so,sv,sV)], (0, 1, 2, 3), v.ooov, (4, 5, 1, 2), (3, 0, 4, 5))
+    t3new += einsum(t2[np.ix_(so,sO,sv,sv)], (0, 1, 2, 3), x263, (4, 5, 6, 0), (5, 6, 1, 3, 2, 4)) * -1.0
+    del x263
+    x264 = np.zeros((naocc, nocc, nocc, nvir), dtype=np.float64)
+    x264 += einsum(t2[np.ix_(so,sO,sv,sv)], (0, 1, 2, 3), v.ooov, (4, 0, 5, 2), (1, 4, 5, 3))
+    t3new += einsum(t2[np.ix_(so,so,sv,sV)], (0, 1, 2, 3), x264, (4, 5, 1, 6), (5, 0, 4, 6, 2, 3)) * -1.0
+    t3new += einsum(t2[np.ix_(so,so,sv,sV)], (0, 1, 2, 3), x264, (4, 5, 0, 6), (1, 5, 4, 6, 2, 3)) * -1.0
+    del x264
+    x265 = np.zeros((naocc, nocc, nocc, nvir), dtype=np.float64)
+    x265 += einsum(t2[np.ix_(so,sO,sv,sv)], (0, 1, 2, 3), v.ooov, (4, 5, 0, 3), (1, 4, 5, 2))
+    t3new += einsum(t2[np.ix_(so,so,sv,sV)], (0, 1, 2, 3), x265, (4, 5, 1, 6), (5, 0, 4, 6, 2, 3)) * -1.0
+    t3new += einsum(t2[np.ix_(so,so,sv,sV)], (0, 1, 2, 3), x265, (4, 5, 0, 6), (1, 5, 4, 6, 2, 3)) * -1.0
+    del x265
+    x266 = np.zeros((naocc, nocc, nocc, nvir), dtype=np.float64)
+    x266 += einsum(t2[np.ix_(so,sO,sv,sv)], (0, 1, 2, 3), v.ooov, (4, 5, 0, 2), (1, 4, 5, 3))
+    x267 = np.zeros((naocc, navir, nocc, nocc, nvir, nvir), dtype=np.float64)
+    x267 += einsum(t2[np.ix_(so,so,sv,sV)], (0, 1, 2, 3), x266, (4, 5, 1, 6), (4, 3, 0, 5, 6, 2))
+    t3new += einsum(x267, (0, 1, 2, 3, 4, 5), (3, 2, 0, 4, 5, 1))
+    t3new += einsum(x267, (0, 1, 2, 3, 4, 5), (3, 2, 0, 4, 5, 1))
+    del x267
+    x268 = np.zeros((navir, nocc, nocc, nocc), dtype=np.float64)
+    x268 += einsum(t2[np.ix_(so,so,sv,sV)], (0, 1, 2, 3), v.ooov, (4, 1, 5, 2), (3, 0, 4, 5))
+    t3new += einsum(t2[np.ix_(so,sO,sv,sv)], (0, 1, 2, 3), x268, (4, 5, 6, 0), (6, 5, 1, 3, 2, 4)) * -1.0
+    del x268
+    x269 = np.zeros((navir, nocc, nvir, nvir), dtype=np.float64)
+    x269 += einsum(t2[np.ix_(so,so,sv,sV)], (0, 1, 2, 3), v.ooov, (4, 0, 1, 5), (3, 4, 2, 5))
+    t3new += einsum(t2[np.ix_(so,sO,sv,sv)], (0, 1, 2, 3), x269, (4, 5, 6, 2), (0, 5, 1, 3, 6, 4)) * -1.0
+    x270 = np.zeros((naocc, navir, nocc, nocc, nvir, nvir), dtype=np.float64)
+    x270 += einsum(t2[np.ix_(so,sO,sv,sv)], (0, 1, 2, 3), x269, (4, 5, 6, 3), (1, 4, 0, 5, 2, 6))
+    del x269
+    t3new += einsum(x270, (0, 1, 2, 3, 4, 5), (3, 2, 0, 5, 4, 1)) * 0.5
+    t3new += einsum(x270, (0, 1, 2, 3, 4, 5), (2, 3, 0, 4, 5, 1))
+    t3new += einsum(x270, (0, 1, 2, 3, 4, 5), (3, 2, 0, 5, 4, 1)) * 0.5
+    del x270
+    x271 = np.zeros((navir, nocc, nvir, nvir), dtype=np.float64)
+    x271 += einsum(t2[np.ix_(so,so,sv,sV)], (0, 1, 2, 3), v.ooov, (4, 1, 0, 5), (3, 4, 2, 5))
+    t3new += einsum(t2[np.ix_(so,sO,sv,sv)], (0, 1, 2, 3), x271, (4, 5, 6, 2), (5, 0, 1, 3, 6, 4)) * -1.0
+    x272 = np.zeros((naocc, navir, nocc, nocc, nvir, nvir), dtype=np.float64)
+    x272 += einsum(t2[np.ix_(so,sO,sv,sv)], (0, 1, 2, 3), x271, (4, 5, 6, 3), (1, 4, 0, 5, 2, 6))
+    del x271
+    t3new += einsum(x272, (0, 1, 2, 3, 4, 5), (3, 2, 0, 5, 4, 1)) * -0.5
+    t3new += einsum(x272, (0, 1, 2, 3, 4, 5), (3, 2, 0, 5, 4, 1)) * -0.5
+    del x272
+    x273 = np.zeros((naocc, navir, nocc, nocc, nvir, nvir), dtype=np.float64)
+    x273 += einsum(t2[np.ix_(so,so,sv,sV)], (0, 1, 2, 3), x266, (4, 5, 0, 6), (4, 3, 1, 5, 6, 2))
+    del x266
+    t3new += einsum(x273, (0, 1, 2, 3, 4, 5), (2, 3, 0, 4, 5, 1))
+    t3new += einsum(x273, (0, 1, 2, 3, 4, 5), (2, 3, 0, 4, 5, 1))
+    del x273
+    x274 = np.zeros((navir, nocc, nocc, nocc), dtype=np.float64)
+    x274 += einsum(t2[np.ix_(so,so,sv,sV)], (0, 1, 2, 3), v.ooov, (4, 0, 5, 2), (3, 1, 4, 5))
+    t3new += einsum(t2[np.ix_(so,sO,sv,sv)], (0, 1, 2, 3), x274, (4, 5, 6, 0), (5, 6, 1, 3, 2, 4)) * -1.0
+    del x274
+    x275 = np.zeros((navir, nocc, nocc, nocc), dtype=np.float64)
+    x275 += einsum(t2[np.ix_(so,so,sv,sV)], (0, 1, 2, 3), v.ooov, (4, 5, 0, 2), (3, 1, 4, 5))
+    t3new += einsum(t2[np.ix_(so,sO,sv,sv)], (0, 1, 2, 3), x275, (4, 5, 6, 0), (5, 6, 1, 3, 2, 4)) * 2.0
+    del x275
+    x276 = np.zeros((navir, nocc, nvir, nvir), dtype=np.float64)
+    x276 += einsum(t2[np.ix_(so,so,sv,sv)], (0, 1, 2, 3), v.ovvV, (1, 3, 4, 5), (5, 0, 2, 4))
+    t3new += einsum(t2[np.ix_(so,sO,sv,sv)], (0, 1, 2, 3), x276, (4, 5, 6, 2), (0, 5, 1, 3, 6, 4)) * -2.0
+    x277 = np.zeros((naocc, navir, nocc, nocc, nvir, nvir), dtype=np.float64)
+    x277 += einsum(t2[np.ix_(so,sO,sv,sv)], (0, 1, 2, 3), x276, (4, 5, 6, 3), (1, 4, 0, 5, 2, 6))
+    del x276
+    t3new += einsum(x277, (0, 1, 2, 3, 4, 5), (3, 2, 0, 5, 4, 1)) * 2.0
+    t3new += einsum(x277, (0, 1, 2, 3, 4, 5), (2, 3, 0, 4, 5, 1)) * 2.0
+    del x277
+    x278 = np.zeros((navir, nocc, nvir, nvir), dtype=np.float64)
+    x278 += einsum(t2[np.ix_(so,so,sv,sv)], (0, 1, 2, 3), v.ovvV, (1, 2, 4, 5), (5, 0, 3, 4))
+    t3new += einsum(t2[np.ix_(so,sO,sv,sv)], (0, 1, 2, 3), x278, (4, 5, 6, 2), (0, 5, 1, 3, 6, 4))
+    x279 = np.zeros((naocc, navir, nocc, nocc, nvir, nvir), dtype=np.float64)
+    x279 += einsum(t2[np.ix_(so,sO,sv,sv)], (0, 1, 2, 3), x278, (4, 5, 6, 3), (1, 4, 0, 5, 2, 6))
+    del x278
+    t3new += einsum(x279, (0, 1, 2, 3, 4, 5), (3, 2, 0, 5, 4, 1)) * -1.0
+    t3new += einsum(x279, (0, 1, 2, 3, 4, 5), (2, 3, 0, 4, 5, 1)) * -1.0
+    del x279
+    x280 = np.zeros((navir, nocc, nvir, nvir), dtype=np.float64)
+    x280 += einsum(t2[np.ix_(so,so,sv,sv)], (0, 1, 2, 3), v.ovvV, (1, 4, 3, 5), (5, 0, 2, 4))
+    t3new += einsum(t2[np.ix_(so,sO,sv,sv)], (0, 1, 2, 3), x280, (4, 5, 6, 2), (0, 5, 1, 3, 6, 4))
+    x281 = np.zeros((naocc, navir, nocc, nocc, nvir, nvir), dtype=np.float64)
+    x281 += einsum(t2[np.ix_(so,sO,sv,sv)], (0, 1, 2, 3), x280, (4, 5, 6, 3), (1, 4, 0, 5, 2, 6))
+    del x280
+    t3new += einsum(x281, (0, 1, 2, 3, 4, 5), (3, 2, 0, 5, 4, 1)) * -1.0
+    t3new += einsum(x281, (0, 1, 2, 3, 4, 5), (2, 3, 0, 4, 5, 1)) * -1.0
+    del x281
+    x282 = np.zeros((naocc, navir, nocc, nocc), dtype=np.float64)
+    x282 += einsum(t2[np.ix_(so,sO,sv,sv)], (0, 1, 2, 3), v.ovvV, (4, 2, 3, 5), (1, 5, 0, 4))
+    x283 = np.zeros((naocc, navir, nocc, nocc, nvir, nvir), dtype=np.float64)
+    x283 += einsum(t2[np.ix_(so,so,sv,sv)], (0, 1, 2, 3), x282, (4, 5, 6, 1), (4, 5, 6, 0, 2, 3))
+    del x282
+    t3new += einsum(x283, (0, 1, 2, 3, 4, 5), (3, 2, 0, 4, 5, 1)) * -1.0
+    t3new += einsum(x283, (0, 1, 2, 3, 4, 5), (2, 3, 0, 5, 4, 1)) * -1.0
+    del x283
+    x284 = np.zeros((navir, nocc, nvir, nvir), dtype=np.float64)
+    x284 += einsum(t2[np.ix_(so,so,sv,sv)], (0, 1, 2, 3), v.ovvV, (1, 4, 2, 5), (5, 0, 3, 4))
+    t3new += einsum(t2[np.ix_(so,sO,sv,sv)], (0, 1, 2, 3), x284, (4, 5, 6, 3), (5, 0, 1, 6, 2, 4))
+    t3new += einsum(t2[np.ix_(so,sO,sv,sv)], (0, 1, 2, 3), x284, (4, 5, 6, 2), (5, 0, 1, 3, 6, 4))
+    del x284
+    x285 = np.zeros((naocc, navir, nvir, nvir), dtype=np.float64)
+    x285 += einsum(t2[np.ix_(so,sO,sv,sv)], (0, 1, 2, 3), v.ovvV, (0, 4, 3, 5), (1, 5, 2, 4))
+    x286 = np.zeros((naocc, navir, nocc, nocc, nvir, nvir), dtype=np.float64)
+    x286 += einsum(t2[np.ix_(so,so,sv,sv)], (0, 1, 2, 3), x285, (4, 5, 6, 3), (4, 5, 0, 1, 6, 2))
+    del x285
+    t3new += einsum(x286, (0, 1, 2, 3, 4, 5), (2, 3, 0, 5, 4, 1)) * -1.0
+    t3new += einsum(x286, (0, 1, 2, 3, 4, 5), (3, 2, 0, 4, 5, 1)) * -1.0
+    del x286
+    x287 = np.zeros((naocc, navir, nvir, nvir), dtype=np.float64)
+    x287 += einsum(t2[np.ix_(so,sO,sv,sv)], (0, 1, 2, 3), v.ovvV, (0, 4, 2, 5), (1, 5, 3, 4))
+    t3new += einsum(t2[np.ix_(so,so,sv,sv)], (0, 1, 2, 3), x287, (4, 5, 6, 2), (0, 1, 4, 6, 3, 5))
+    del x287
+    x288 = np.zeros((naocc, navir, nvir, nvir), dtype=np.float64)
+    x288 += einsum(t2[np.ix_(so,sO,sv,sv)], (0, 1, 2, 3), v.ovvV, (0, 3, 4, 5), (1, 5, 2, 4))
+    t3new += einsum(t2[np.ix_(so,so,sv,sv)], (0, 1, 2, 3), x288, (4, 5, 6, 2), (0, 1, 4, 6, 3, 5))
+    del x288
+    x289 = np.zeros((navir, nocc, nocc, nocc), dtype=np.float64)
+    x289 += einsum(t2[np.ix_(so,so,sv,sv)], (0, 1, 2, 3), v.ovvV, (4, 3, 2, 5), (5, 0, 1, 4))
+    t3new += einsum(t2[np.ix_(so,sO,sv,sv)], (0, 1, 2, 3), x289, (4, 5, 6, 0), (5, 6, 1, 3, 2, 4))
+    del x289
+    x290 = np.zeros((naocc, navir, nvir, nvir), dtype=np.float64)
+    x290 += einsum(t2[np.ix_(so,sO,sv,sv)], (0, 1, 2, 3), v.ovvV, (0, 2, 4, 5), (1, 5, 3, 4))
+    t3new += einsum(t2[np.ix_(so,so,sv,sv)], (0, 1, 2, 3), x290, (4, 5, 6, 2), (0, 1, 4, 6, 3, 5)) * -2.0
+    del x290
+    x291 = np.zeros((naocc, navir, nocc, nocc), dtype=np.float64)
+    x291 += einsum(t2[np.ix_(so,sO,sv,sv)], (0, 1, 2, 3), v.ovvV, (4, 3, 2, 5), (1, 5, 0, 4))
+    t3new += einsum(t2[np.ix_(so,so,sv,sv)], (0, 1, 2, 3), x291, (4, 5, 6, 1), (6, 0, 4, 3, 2, 5))
+    del x291
+    x292 = np.zeros((naocc, navir, nocc, nocc, nvir, nvir), dtype=np.float64)
+    x292 += einsum(t2[np.ix_(so,so,sv,sv)], (0, 1, 2, 3), x113, (4, 5, 6, 1, 3, 7), (4, 5, 6, 0, 2, 7))
+    t3new += einsum(x292, (0, 1, 2, 3, 4, 5), (3, 2, 0, 4, 5, 1)) * 2.0
+    t3new += einsum(x292, (0, 1, 2, 3, 4, 5), (2, 3, 0, 5, 4, 1)) * 2.0
+    del x292
+    x293 = np.zeros((naocc, navir, nocc, nocc, nvir, nvir), dtype=np.float64)
+    x293 += einsum(t2[np.ix_(so,so,sv,sv)], (0, 1, 2, 3), x113, (4, 5, 6, 1, 2, 7), (4, 5, 6, 0, 3, 7))
+    t3new += einsum(x293, (0, 1, 2, 3, 4, 5), (3, 2, 0, 4, 5, 1)) * -1.0
+    t3new += einsum(x293, (0, 1, 2, 3, 4, 5), (2, 3, 0, 5, 4, 1)) * -1.0
+    del x293
+    x294 = np.zeros((naocc, navir, nocc, nocc, nvir, nvir), dtype=np.float64)
+    x294 += einsum(t2[np.ix_(so,sO,sv,sV)], (0, 1, 2, 3), v.ovvv, (4, 2, 5, 6), (1, 3, 0, 4, 5, 6))
+    x295 = np.zeros((naocc, navir, nocc, nocc, nvir, nvir), dtype=np.float64)
+    x295 += einsum(t2[np.ix_(so,so,sv,sv)], (0, 1, 2, 3), x294, (4, 5, 6, 1, 3, 7), (4, 5, 6, 0, 2, 7))
+    t3new += einsum(x295, (0, 1, 2, 3, 4, 5), (3, 2, 0, 4, 5, 1)) * -1.0
+    t3new += einsum(x295, (0, 1, 2, 3, 4, 5), (2, 3, 0, 5, 4, 1)) * -1.0
+    del x295
+    x296 = np.zeros((naocc, navir, nocc, nocc, nvir, nvir), dtype=np.float64)
+    x296 += einsum(t2[np.ix_(so,so,sv,sv)], (0, 1, 2, 3), x294, (4, 5, 6, 1, 2, 7), (4, 5, 6, 0, 3, 7))
+    t3new += einsum(x296, (0, 1, 2, 3, 4, 5), (3, 2, 0, 5, 4, 1)) * -1.0
+    t3new += einsum(x296, (0, 1, 2, 3, 4, 5), (2, 3, 0, 4, 5, 1)) * -1.0
+    del x296
+    x297 = np.zeros((naocc, navir, nvir, nvir), dtype=np.float64)
+    x297 += einsum(t2[np.ix_(so,sO,sv,sV)], (0, 1, 2, 3), v.ovvv, (0, 4, 5, 2), (1, 3, 4, 5))
+    x298 = np.zeros((naocc, navir, nocc, nocc, nvir, nvir), dtype=np.float64)
+    x298 += einsum(t2[np.ix_(so,so,sv,sv)], (0, 1, 2, 3), x297, (4, 5, 3, 6), (4, 5, 0, 1, 2, 6))
+    del x297
+    t3new += einsum(x298, (0, 1, 2, 3, 4, 5), (2, 3, 0, 4, 5, 1)) * -1.0
+    t3new += einsum(x298, (0, 1, 2, 3, 4, 5), (3, 2, 0, 5, 4, 1)) * -1.0
+    del x298
+    x299 = np.zeros((naocc, navir, nocc, nocc, nvir, nvir), dtype=np.float64)
+    x299 += einsum(t2[np.ix_(so,sO,sv,sV)], (0, 1, 2, 3), x58, (4, 5, 0, 6), (1, 3, 4, 5, 2, 6))
+    del x58
+    t3new += einsum(x299, (0, 1, 2, 3, 4, 5), (2, 3, 0, 4, 5, 1)) * -1.0
+    t3new += einsum(x299, (0, 1, 2, 3, 4, 5), (3, 2, 0, 5, 4, 1)) * -1.0
+    del x299
+    x300 = np.zeros((naocc, navir, nvir, nvir), dtype=np.float64)
+    x300 += einsum(t2[np.ix_(so,sO,sv,sV)], (0, 1, 2, 3), v.ovvv, (0, 2, 4, 5), (1, 3, 4, 5))
+    x301 = np.zeros((naocc, navir, nocc, nocc, nvir, nvir), dtype=np.float64)
+    x301 += einsum(t2[np.ix_(so,so,sv,sv)], (0, 1, 2, 3), x300, (4, 5, 6, 3), (4, 5, 0, 1, 2, 6))
+    del x300
+    t3new += einsum(x301, (0, 1, 2, 3, 4, 5), (2, 3, 0, 4, 5, 1)) * 2.0
+    t3new += einsum(x301, (0, 1, 2, 3, 4, 5), (3, 2, 0, 5, 4, 1)) * 2.0
+    del x301
+    x302 = np.zeros((naocc, nocc, nocc, nvir), dtype=np.float64)
+    x302 += einsum(t2[np.ix_(so,sO,sv,sv)], (0, 1, 2, 3), v.ovvv, (4, 3, 5, 2), (1, 0, 4, 5))
+    t3new += einsum(t2[np.ix_(so,so,sv,sV)], (0, 1, 2, 3), x302, (4, 5, 0, 6), (1, 5, 4, 2, 6, 3))
+    x303 = np.zeros((naocc, navir, nocc, nocc, nvir, nvir), dtype=np.float64)
+    x303 += einsum(t2[np.ix_(so,so,sv,sV)], (0, 1, 2, 3), x302, (4, 5, 1, 6), (4, 3, 5, 0, 2, 6))
+    del x302
+    t3new += einsum(x303, (0, 1, 2, 3, 4, 5), (3, 2, 0, 4, 5, 1)) * -1.0
+    t3new += einsum(x303, (0, 1, 2, 3, 4, 5), (2, 3, 0, 5, 4, 1)) * -1.0
+    del x303
+    x304 = np.zeros((navir, nocc, nvir, nvir), dtype=np.float64)
+    x304 += einsum(t2[np.ix_(so,so,sv,sV)], (0, 1, 2, 3), v.ovvv, (1, 2, 4, 5), (3, 0, 4, 5))
+    t3new += einsum(t2[np.ix_(so,sO,sv,sv)], (0, 1, 2, 3), x304, (4, 5, 6, 3), (5, 0, 1, 6, 2, 4))
+    t3new += einsum(t2[np.ix_(so,sO,sv,sv)], (0, 1, 2, 3), x304, (4, 5, 6, 2), (5, 0, 1, 3, 6, 4))
+    del x304
+    x305 = np.zeros((navir, nocc, nvir, nvir), dtype=np.float64)
+    x305 += einsum(t2[np.ix_(so,so,sv,sV)], (0, 1, 2, 3), v.ovvv, (1, 4, 5, 2), (3, 0, 4, 5))
+    t3new += einsum(t2[np.ix_(so,sO,sv,sv)], (0, 1, 2, 3), x305, (4, 5, 2, 6), (0, 5, 1, 3, 6, 4))
+    x306 = np.zeros((naocc, navir, nocc, nocc, nvir, nvir), dtype=np.float64)
+    x306 += einsum(t2[np.ix_(so,sO,sv,sv)], (0, 1, 2, 3), x305, (4, 5, 3, 6), (1, 4, 0, 5, 2, 6))
+    del x305
+    t3new += einsum(x306, (0, 1, 2, 3, 4, 5), (3, 2, 0, 5, 4, 1)) * -1.0
+    t3new += einsum(x306, (0, 1, 2, 3, 4, 5), (2, 3, 0, 4, 5, 1)) * -1.0
+    del x306
+    x307 = np.zeros((naocc, nocc, nocc, nvir), dtype=np.float64)
+    x307 += einsum(t2[np.ix_(so,sO,sv,sv)], (0, 1, 2, 3), v.ovvv, (4, 2, 5, 3), (1, 0, 4, 5))
+    t3new += einsum(t2[np.ix_(so,so,sv,sV)], (0, 1, 2, 3), x307, (4, 5, 1, 6), (5, 0, 4, 6, 2, 3))
+    t3new += einsum(t2[np.ix_(so,so,sv,sV)], (0, 1, 2, 3), x307, (4, 5, 0, 6), (1, 5, 4, 6, 2, 3))
+    del x307
+    x308 = np.zeros((naocc, nvir, nvir, nvir), dtype=np.float64)
+    x308 += einsum(t2[np.ix_(so,sO,sv,sv)], (0, 1, 2, 3), v.ovvv, (0, 4, 5, 3), (1, 2, 4, 5))
+    t3new += einsum(t2[np.ix_(so,so,sv,sV)], (0, 1, 2, 3), x308, (4, 5, 2, 6), (1, 0, 4, 6, 5, 3))
+    del x308
+    x309 = np.zeros((naocc, nvir, nvir, nvir), dtype=np.float64)
+    x309 += einsum(t2[np.ix_(so,sO,sv,sv)], (0, 1, 2, 3), v.ovvv, (0, 4, 5, 2), (1, 3, 4, 5))
+    t3new += einsum(t2[np.ix_(so,so,sv,sV)], (0, 1, 2, 3), x309, (4, 5, 2, 6), (1, 0, 4, 5, 6, 3))
+    del x309
+    x310 = np.zeros((naocc, nvir, nvir, nvir), dtype=np.float64)
+    x310 += einsum(t2[np.ix_(so,sO,sv,sv)], (0, 1, 2, 3), v.ovvv, (0, 3, 4, 5), (1, 2, 4, 5))
+    t3new += einsum(t2[np.ix_(so,so,sv,sV)], (0, 1, 2, 3), x310, (4, 5, 6, 2), (1, 0, 4, 5, 6, 3))
+    del x310
+    x311 = np.zeros((naocc, nvir, nvir, nvir), dtype=np.float64)
+    x311 += einsum(t2[np.ix_(so,sO,sv,sv)], (0, 1, 2, 3), v.ovvv, (0, 2, 4, 5), (1, 3, 4, 5))
+    x312 = np.zeros((naocc, navir, nocc, nocc, nvir, nvir), dtype=np.float64)
+    x312 += einsum(t2[np.ix_(so,so,sv,sV)], (0, 1, 2, 3), x311, (4, 5, 6, 2), (4, 3, 1, 0, 5, 6))
+    del x311
+    t3new += einsum(x312, (0, 1, 2, 3, 4, 5), (2, 3, 0, 4, 5, 1)) * -1.0
+    t3new += einsum(x312, (0, 1, 2, 3, 4, 5), (2, 3, 0, 4, 5, 1)) * -1.0
+    del x312
+    x313 = np.zeros((navir, nocc, nvir, nvir), dtype=np.float64)
+    x313 += einsum(t2[np.ix_(so,so,sv,sV)], (0, 1, 2, 3), v.ovvv, (0, 2, 4, 5), (3, 1, 4, 5))
+    t3new += einsum(t2[np.ix_(so,sO,sv,sv)], (0, 1, 2, 3), x313, (4, 5, 6, 3), (5, 0, 1, 6, 2, 4)) * -2.0
+    t3new += einsum(t2[np.ix_(so,sO,sv,sv)], (0, 1, 2, 3), x313, (4, 5, 6, 2), (5, 0, 1, 3, 6, 4)) * -2.0
+    del x313
+    x314 = np.zeros((navir, nocc, nvir, nvir), dtype=np.float64)
+    x314 += einsum(t2[np.ix_(so,so,sv,sV)], (0, 1, 2, 3), v.ovvv, (0, 4, 5, 2), (3, 1, 4, 5))
+    t3new += einsum(t2[np.ix_(so,sO,sv,sv)], (0, 1, 2, 3), x314, (4, 5, 3, 6), (5, 0, 1, 6, 2, 4))
+    t3new += einsum(t2[np.ix_(so,sO,sv,sv)], (0, 1, 2, 3), x314, (4, 5, 2, 6), (5, 0, 1, 3, 6, 4))
+    del x314
+    x315 = np.zeros((naocc, navir, nocc, nocc), dtype=np.float64)
+    x315 += einsum(t2[np.ix_(so,sO,sV,sv)], (0, 1, 2, 3), v.ooov, (4, 5, 0, 3), (1, 2, 4, 5))
+    x316 = np.zeros((naocc, navir, nocc, nocc, nvir, nvir), dtype=np.float64)
+    x316 += einsum(t2[np.ix_(so,so,sv,sv)], (0, 1, 2, 3), x315, (4, 5, 6, 1), (4, 5, 0, 6, 2, 3))
+    del x315
+    t3new += einsum(x316, (0, 1, 2, 3, 4, 5), (2, 3, 0, 4, 5, 1))
+    t3new += einsum(x316, (0, 1, 2, 3, 4, 5), (3, 2, 0, 5, 4, 1))
+    del x316
+    x317 = np.zeros((naocc, navir, nocc, nocc), dtype=np.float64)
+    x317 += einsum(t2[np.ix_(so,sO,sV,sv)], (0, 1, 2, 3), v.ooov, (4, 0, 5, 3), (1, 2, 4, 5))
+    t3new += einsum(t2[np.ix_(so,so,sv,sv)], (0, 1, 2, 3), x317, (4, 5, 6, 1), (6, 0, 4, 3, 2, 5)) * -1.0
+    del x317
+    x318 = np.zeros((naocc, navir, nocc, nocc, nocc, nocc), dtype=np.float64)
+    x318 += einsum(t2[np.ix_(so,sO,sV,sv)], (0, 1, 2, 3), v.ooov, (4, 5, 6, 3), (1, 2, 0, 4, 5, 6))
+    t3new += einsum(t2[np.ix_(so,so,sv,sv)], (0, 1, 2, 3), x318, (4, 5, 6, 7, 0, 1), (6, 7, 4, 3, 2, 5)) * -1.0
+    x319 = np.zeros((naocc, navir, nvir, nvir), dtype=np.float64)
+    x319 += einsum(t2[np.ix_(so,sO,sV,sv)], (0, 1, 2, 3), v.ovvv, (0, 4, 5, 3), (1, 2, 4, 5))
+    t3new += einsum(t2[np.ix_(so,so,sv,sv)], (0, 1, 2, 3), x319, (4, 5, 2, 6), (0, 1, 4, 6, 3, 5))
+    del x319
+    x320 = np.zeros((naocc, navir, nvir, nvir), dtype=np.float64)
+    x320 += einsum(t2[np.ix_(so,sO,sV,sv)], (0, 1, 2, 3), v.ovvv, (0, 3, 4, 5), (1, 2, 4, 5))
+    x321 = np.zeros((naocc, navir, nocc, nocc, nvir, nvir), dtype=np.float64)
+    x321 += einsum(t2[np.ix_(so,so,sv,sv)], (0, 1, 2, 3), x320, (4, 5, 6, 3), (4, 5, 0, 1, 2, 6))
+    del x320
+    t3new += einsum(x321, (0, 1, 2, 3, 4, 5), (2, 3, 0, 4, 5, 1)) * -1.0
+    t3new += einsum(x321, (0, 1, 2, 3, 4, 5), (3, 2, 0, 5, 4, 1)) * -1.0
+    del x321
+    x322 = np.zeros((naocc, navir, nocc, nocc, nvir, nvir), dtype=np.float64)
+    x322 += einsum(t2[np.ix_(so,sO,sV,sv)], (0, 1, 2, 3), v.ovvv, (4, 3, 5, 6), (1, 2, 0, 4, 5, 6))
+    t3new += einsum(t2[np.ix_(so,so,sv,sv)], (0, 1, 2, 3), x322, (4, 5, 6, 1, 3, 7), (6, 0, 4, 7, 2, 5))
+    t3new += einsum(t2[np.ix_(so,so,sv,sv)], (0, 1, 2, 3), x322, (4, 5, 6, 1, 2, 7), (6, 0, 4, 3, 7, 5))
+    x323 = np.zeros((naocc, navir, nvir, nvir), dtype=np.float64)
+    x323 += einsum(v.ovov, (0, 1, 2, 3), t3[np.ix_(so,so,sO,sv,sv,sV)], (2, 0, 4, 5, 1, 6), (4, 6, 5, 3))
+    t3new += einsum(t2[np.ix_(so,so,sv,sv)], (0, 1, 2, 3), x323, (4, 5, 6, 2), (0, 1, 4, 6, 3, 5)) * -1.0
+    del x323
+    x324 = np.zeros((naocc, navir, nvir, nvir), dtype=np.float64)
+    x324 += einsum(v.ovov, (0, 1, 2, 3), t3[np.ix_(so,so,sO,sv,sv,sV)], (2, 0, 4, 3, 5, 6), (4, 6, 5, 1))
+    t3new += einsum(t2[np.ix_(so,so,sv,sv)], (0, 1, 2, 3), x324, (4, 5, 6, 3), (0, 1, 4, 2, 6, 5)) * -1.0
+    del x324
+    x325 = np.zeros((naocc, navir, nocc, nocc, nvir, nvir), dtype=np.float64)
+    x325 += einsum(x12, (0, 1), t3[np.ix_(so,so,sO,sv,sv,sV)], (1, 2, 3, 4, 5, 6), (3, 6, 0, 2, 4, 5))
+    del x12
+    t3new += einsum(x325, (0, 1, 2, 3, 4, 5), (2, 3, 0, 4, 5, 1)) * -1.0
+    t3new += einsum(x325, (0, 1, 2, 3, 4, 5), (2, 3, 0, 4, 5, 1)) * -1.0
+    del x325
+    x326 = np.zeros((naocc, navir, nocc, nocc), dtype=np.float64)
+    x326 += einsum(v.ovov, (0, 1, 2, 3), t3[np.ix_(so,so,sO,sv,sv,sV)], (2, 4, 5, 3, 1, 6), (5, 6, 4, 0))
+    x327 = np.zeros((naocc, navir, nocc, nocc, nvir, nvir), dtype=np.float64)
+    x327 += einsum(t2[np.ix_(so,so,sv,sv)], (0, 1, 2, 3), x326, (4, 5, 6, 1), (4, 5, 0, 6, 2, 3))
+    del x326
+    t3new += einsum(x327, (0, 1, 2, 3, 4, 5), (2, 3, 0, 4, 5, 1)) * -1.0
+    t3new += einsum(x327, (0, 1, 2, 3, 4, 5), (3, 2, 0, 5, 4, 1)) * -1.0
+    del x327
+    x328 = np.zeros((naocc, navir, nocc, nocc, nvir, nvir), dtype=np.float64)
+    x328 += einsum(v.ovov, (0, 1, 2, 3), t3[np.ix_(so,so,sO,sv,sv,sV)], (2, 4, 5, 1, 6, 7), (5, 7, 4, 0, 6, 3))
+    t3new += einsum(t2[np.ix_(so,so,sv,sv)], (0, 1, 2, 3), x328, (4, 5, 6, 1, 7, 3), (0, 6, 4, 2, 7, 5)) * -1.0
+    t3new += einsum(t2[np.ix_(so,so,sv,sv)], (0, 1, 2, 3), x328, (4, 5, 6, 1, 7, 2), (0, 6, 4, 3, 7, 5))
+    del x328
+    x329 = np.zeros((naocc, navir, nocc, nocc, nvir, nvir), dtype=np.float64)
+    x329 += einsum(v.ovov, (0, 1, 2, 3), t3[np.ix_(so,so,sO,sv,sv,sV)], (2, 4, 5, 6, 1, 7), (5, 7, 4, 0, 6, 3))
+    t3new += einsum(t2[np.ix_(so,so,sv,sv)], (0, 1, 2, 3), x329, (4, 5, 6, 1, 7, 2), (0, 6, 4, 7, 3, 5))
+    del x329
+    x330 = np.zeros((naocc, navir, nocc, nocc), dtype=np.float64)
+    x330 += einsum(v.ovov, (0, 1, 2, 3), t3[np.ix_(so,so,sO,sv,sv,sV)], (4, 2, 5, 1, 3, 6), (5, 6, 4, 0))
+    t3new += einsum(t2[np.ix_(so,so,sv,sv)], (0, 1, 2, 3), x330, (4, 5, 6, 1), (6, 0, 4, 3, 2, 5)) * -1.0
+    del x330
+    x331 = np.zeros((naocc, navir, nocc, nocc), dtype=np.float64)
+    x331 += einsum(v.ovov, (0, 1, 2, 3), t3[np.ix_(so,so,sO,sv,sv,sV)], (2, 4, 5, 1, 3, 6), (5, 6, 4, 0))
+    t3new += einsum(t2[np.ix_(so,so,sv,sv)], (0, 1, 2, 3), x331, (4, 5, 6, 1), (6, 0, 4, 3, 2, 5))
+    del x331
+    x332 = np.zeros((naocc, navir, nocc, nocc, nvir, nvir), dtype=np.float64)
+    x332 += einsum(v.ovov, (0, 1, 2, 3), t3[np.ix_(so,so,sO,sv,sv,sV)], (4, 2, 5, 6, 1, 7), (5, 7, 4, 0, 6, 3))
+    t3new += einsum(t2[np.ix_(so,so,sv,sv)], (0, 1, 2, 3), x332, (4, 5, 6, 1, 7, 3), (6, 0, 4, 7, 2, 5)) * -2.0
+    t3new += einsum(t2[np.ix_(so,so,sv,sv)], (0, 1, 2, 3), x332, (4, 5, 6, 1, 7, 2), (6, 0, 4, 7, 3, 5))
+    del x332
+    x333 = np.zeros((naocc, navir, nocc, nocc, nvir, nvir), dtype=np.float64)
+    x333 += einsum(v.ovov, (0, 1, 2, 3), t3[np.ix_(so,so,sO,sv,sv,sV)], (4, 2, 5, 1, 6, 7), (5, 7, 4, 0, 6, 3))
+    t3new += einsum(t2[np.ix_(so,so,sv,sv)], (0, 1, 2, 3), x333, (4, 5, 6, 1, 7, 3), (6, 0, 4, 7, 2, 5))
+    t3new += einsum(t2[np.ix_(so,so,sv,sv)], (0, 1, 2, 3), x333, (4, 5, 6, 1, 7, 2), (6, 0, 4, 3, 7, 5))
+    del x333
+    x334 = np.zeros((naocc, navir, nocc, nocc, nocc, nocc), dtype=np.float64)
+    x334 += einsum(v.ovov, (0, 1, 2, 3), t3[np.ix_(so,so,sO,sv,sv,sV)], (4, 5, 6, 1, 3, 7), (6, 7, 4, 5, 0, 2))
+    t3new += einsum(t2[np.ix_(so,so,sv,sv)], (0, 1, 2, 3), x334, (4, 5, 6, 7, 0, 1), (6, 7, 4, 2, 3, 5))
+    x335 = np.zeros((naocc, navir, nocc, nocc, nvir, nvir), dtype=np.float64)
+    x335 += einsum(x85, (0, 1), t3[np.ix_(so,so,sO,sv,sv,sV)], (2, 3, 4, 1, 5, 6), (4, 6, 2, 3, 0, 5))
+    t3new += einsum(x335, (0, 1, 2, 3, 4, 5), (2, 3, 0, 4, 5, 1)) * 0.5
+    t3new += einsum(x335, (0, 1, 2, 3, 4, 5), (2, 3, 0, 4, 5, 1)) * 0.5
+    del x335
+    x336 = np.zeros((naocc, navir, nocc, nocc, nvir, nvir), dtype=np.float64)
+    x336 += einsum(x85, (0, 1), t3[np.ix_(so,so,sO,sv,sv,sV)], (2, 3, 4, 5, 1, 6), (4, 6, 2, 3, 0, 5))
+    del x85
+    t3new += einsum(x336, (0, 1, 2, 3, 4, 5), (2, 3, 0, 5, 4, 1)) * 0.5
+    t3new += einsum(x336, (0, 1, 2, 3, 4, 5), (2, 3, 0, 5, 4, 1)) * 0.5
+    del x336
+    x337 = np.zeros((naocc, navir, nocc, nocc, nvir, nvir), dtype=np.float64)
+    x337 += einsum(x83, (0, 1), t3[np.ix_(so,so,sO,sv,sv,sV)], (2, 3, 4, 1, 5, 6), (4, 6, 2, 3, 0, 5))
+    t3new += einsum(x337, (0, 1, 2, 3, 4, 5), (2, 3, 0, 4, 5, 1)) * -0.5
+    t3new += einsum(x337, (0, 1, 2, 3, 4, 5), (2, 3, 0, 4, 5, 1)) * -1.5
+    del x337
+    x338 = np.zeros((naocc, navir, nocc, nocc, nvir, nvir), dtype=np.float64)
+    x338 += einsum(x83, (0, 1), t3[np.ix_(so,so,sO,sv,sv,sV)], (2, 3, 4, 5, 1, 6), (4, 6, 2, 3, 0, 5))
+    del x83
+    t3new += einsum(x338, (0, 1, 2, 3, 4, 5), (2, 3, 0, 5, 4, 1)) * -1.5
+    t3new += einsum(x338, (0, 1, 2, 3, 4, 5), (2, 3, 0, 5, 4, 1)) * -0.5
+    del x338
+    x339 = np.zeros((naocc, nocc, nocc, nvir), dtype=np.float64)
+    x339 += einsum(v.ovoV, (0, 1, 2, 3), t3[np.ix_(so,so,sO,sv,sv,sV)], (2, 4, 5, 1, 6, 3), (5, 4, 0, 6))
+    t3new += einsum(t2[np.ix_(so,so,sv,sV)], (0, 1, 2, 3), x339, (4, 5, 1, 6), (0, 5, 4, 2, 6, 3)) * 0.5
+    t3new += einsum(t2[np.ix_(so,so,sv,sV)], (0, 1, 2, 3), x339, (4, 5, 0, 6), (1, 5, 4, 2, 6, 3)) * -0.5
+    del x339
+    x340 = np.zeros((naocc, nocc, nocc, nvir), dtype=np.float64)
+    x340 += einsum(v.ovoV, (0, 1, 2, 3), t3[np.ix_(so,so,sO,sv,sv,sV)], (0, 4, 5, 1, 6, 3), (5, 4, 2, 6))
+    t3new += einsum(t2[np.ix_(so,so,sv,sV)], (0, 1, 2, 3), x340, (4, 5, 1, 6), (0, 5, 4, 2, 6, 3)) * -0.5
+    t3new += einsum(t2[np.ix_(so,so,sv,sV)], (0, 1, 2, 3), x340, (4, 5, 0, 6), (1, 5, 4, 2, 6, 3)) * 0.5
+    del x340
+    x341 = np.zeros((navir, navir, nocc, nocc), dtype=np.float64)
+    x341 += einsum(t2[np.ix_(so,so,sv,sV)], (0, 1, 2, 3), v.ovoV, (1, 2, 4, 5), (3, 5, 0, 4))
+    t3new += einsum(x341, (0, 1, 2, 3), t3[np.ix_(so,so,sO,sv,sv,sV)], (3, 4, 5, 6, 7, 1), (2, 4, 5, 6, 7, 0)) * -1.0
+    del x341
+    x342 = np.zeros((navir, navir, nocc, nocc), dtype=np.float64)
+    x342 += einsum(t2[np.ix_(so,so,sv,sV)], (0, 1, 2, 3), v.ovoV, (4, 2, 1, 5), (3, 5, 0, 4))
+    t3new += einsum(x342, (0, 1, 2, 3), t3[np.ix_(so,so,sO,sv,sv,sV)], (3, 4, 5, 6, 7, 1), (2, 4, 5, 6, 7, 0))
+    t3new += einsum(x342, (0, 1, 2, 3), t3[np.ix_(so,so,sO,sv,sv,sV)], (4, 3, 5, 6, 7, 1), (4, 2, 5, 6, 7, 0))
+    del x342
+    x343 = np.zeros((naocc, nvir, nvir, nvir), dtype=np.float64)
+    x343 += einsum(v.ovoV, (0, 1, 2, 3), t3[np.ix_(so,so,sO,sv,sv,sV)], (2, 0, 4, 5, 6, 3), (4, 5, 6, 1))
+    t3new += einsum(t2[np.ix_(so,so,sv,sV)], (0, 1, 2, 3), x343, (4, 5, 6, 2), (1, 0, 4, 5, 6, 3)) * -1.0
+    del x343
+    x344 = np.zeros((naocc, nocc, nocc, nvir), dtype=np.float64)
+    x344 += einsum(v.ovoV, (0, 1, 2, 3), t3[np.ix_(so,so,sO,sv,sv,sV)], (4, 2, 5, 6, 1, 3), (5, 4, 0, 6))
+    t3new += einsum(t2[np.ix_(so,so,sv,sV)], (0, 1, 2, 3), x344, (4, 5, 1, 6), (5, 0, 4, 6, 2, 3))
+    del x344
+    x345 = np.zeros((naocc, nocc, nocc, nvir), dtype=np.float64)
+    x345 += einsum(v.ovoV, (0, 1, 2, 3), t3[np.ix_(so,so,sO,sv,sv,sV)], (4, 0, 5, 6, 1, 3), (5, 4, 2, 6))
+    t3new += einsum(t2[np.ix_(so,so,sv,sV)], (0, 1, 2, 3), x345, (4, 5, 1, 6), (5, 0, 4, 6, 2, 3)) * -2.0
+    del x345
+    x346 = np.zeros((naocc, nocc, nocc, nvir), dtype=np.float64)
+    x346 += einsum(v.ovoV, (0, 1, 2, 3), t3[np.ix_(so,so,sO,sv,sv,sV)], (4, 2, 5, 1, 6, 3), (5, 4, 0, 6))
+    t3new += einsum(t2[np.ix_(so,so,sv,sV)], (0, 1, 2, 3), x346, (4, 5, 1, 6), (5, 0, 4, 6, 2, 3)) * -0.5
+    del x346
+    x347 = np.zeros((naocc, nocc, nocc, nvir), dtype=np.float64)
+    x347 += einsum(v.ovoV, (0, 1, 2, 3), t3[np.ix_(so,so,sO,sv,sv,sV)], (4, 0, 5, 1, 6, 3), (5, 4, 2, 6))
+    t3new += einsum(t2[np.ix_(so,so,sv,sV)], (0, 1, 2, 3), x347, (4, 5, 1, 6), (5, 0, 4, 6, 2, 3)) * 0.5
+    del x347
+    x348 = np.zeros((navir, navir, nocc, nocc), dtype=np.float64)
+    x348 += einsum(t2[np.ix_(so,so,sv,sV)], (0, 1, 2, 3), v.ovoV, (0, 2, 4, 5), (3, 5, 1, 4))
+    t3new += einsum(x348, (0, 1, 2, 3), t3[np.ix_(so,so,sO,sv,sv,sV)], (3, 4, 5, 6, 7, 1), (2, 4, 5, 6, 7, 0)) * 2.0
+    del x348
+    x349 = np.zeros((naocc, nocc, nocc, nvir), dtype=np.float64)
+    x349 += einsum(v.ovoV, (0, 1, 2, 3), t3[np.ix_(so,so,sO,sv,sv,sV)], (2, 4, 5, 6, 1, 3), (5, 4, 0, 6))
+    t3new += einsum(t2[np.ix_(so,so,sv,sV)], (0, 1, 2, 3), x349, (4, 5, 0, 6), (1, 5, 4, 6, 2, 3)) * -1.0
+    del x349
+    x350 = np.zeros((navir, navir, nocc, nocc), dtype=np.float64)
+    x350 += einsum(t2[np.ix_(so,so,sv,sV)], (0, 1, 2, 3), v.ovoV, (4, 2, 0, 5), (3, 5, 1, 4))
+    t3new += einsum(x350, (0, 1, 2, 3), t3[np.ix_(so,so,sO,sv,sv,sV)], (3, 4, 5, 6, 7, 1), (2, 4, 5, 6, 7, 0)) * -1.0
+    del x350
+    x351 = np.zeros((navir, navir, nvir, nvir), dtype=np.float64)
+    x351 += einsum(t2[np.ix_(so,so,sv,sV)], (0, 1, 2, 3), v.ovoV, (0, 4, 1, 5), (3, 5, 2, 4))
+    t3new += einsum(x351, (0, 1, 2, 3), t3[np.ix_(so,so,sO,sv,sv,sV)], (4, 5, 6, 3, 7, 1), (4, 5, 6, 2, 7, 0)) * 0.25
+    del x351
+    x352 = np.zeros((navir, navir, nvir, nvir), dtype=np.float64)
+    x352 += einsum(t2[np.ix_(so,so,sv,sV)], (0, 1, 2, 3), v.ovoV, (1, 4, 0, 5), (3, 5, 2, 4))
+    t3new += einsum(x352, (0, 1, 2, 3), t3[np.ix_(so,so,sO,sv,sv,sV)], (4, 5, 6, 3, 7, 1), (4, 5, 6, 2, 7, 0)) * -0.25
+    del x352
+    x353 = np.zeros((navir, navir), dtype=np.float64)
+    x353 += einsum(t2[np.ix_(so,so,sv,sV)], (0, 1, 2, 3), v.ovoV, (0, 2, 1, 4), (3, 4))
+    t3new += einsum(x353, (0, 1), t3[np.ix_(so,so,sO,sv,sv,sV)], (2, 3, 4, 5, 6, 1), (2, 3, 4, 5, 6, 0)) * -0.5
+    del x353
+    x354 = np.zeros((navir, navir), dtype=np.float64)
+    x354 += einsum(t2[np.ix_(so,so,sv,sV)], (0, 1, 2, 3), v.ovoV, (1, 2, 0, 4), (3, 4))
+    t3new += einsum(x354, (0, 1), t3[np.ix_(so,so,sO,sv,sv,sV)], (2, 3, 4, 5, 6, 1), (2, 3, 4, 5, 6, 0)) * 0.5
+    del x354
+    x355 = np.zeros((navir, navir, nvir, nvir), dtype=np.float64)
+    x355 += einsum(t2[np.ix_(so,so,sv,sV)], (0, 1, 2, 3), v.ovoV, (1, 4, 0, 5), (3, 5, 2, 4))
+    t3new += einsum(x355, (0, 1, 2, 3), t3[np.ix_(so,so,sO,sv,sv,sV)], (4, 5, 6, 3, 7, 1), (4, 5, 6, 2, 7, 0)) * -0.25
+    del x355
+    x356 = np.zeros((navir, navir, nvir, nvir), dtype=np.float64)
+    x356 += einsum(t2[np.ix_(so,so,sv,sV)], (0, 1, 2, 3), v.ovoV, (0, 4, 1, 5), (3, 5, 2, 4))
+    t3new += einsum(x356, (0, 1, 2, 3), t3[np.ix_(so,so,sO,sv,sv,sV)], (4, 5, 6, 3, 7, 1), (4, 5, 6, 2, 7, 0)) * 0.25
+    t3new += einsum(x356, (0, 1, 2, 3), t3[np.ix_(so,so,sO,sv,sv,sV)], (4, 5, 6, 7, 3, 1), (4, 5, 6, 7, 2, 0))
+    del x356
+    x357 = np.zeros((navir, navir), dtype=np.float64)
+    x357 += einsum(t2[np.ix_(so,so,sv,sV)], (0, 1, 2, 3), v.ovoV, (1, 2, 0, 4), (3, 4))
+    t3new += einsum(x357, (0, 1), t3[np.ix_(so,so,sO,sv,sv,sV)], (2, 3, 4, 5, 6, 1), (2, 3, 4, 5, 6, 0)) * 0.5
+    del x357
+    x358 = np.zeros((navir, navir), dtype=np.float64)
+    x358 += einsum(t2[np.ix_(so,so,sv,sV)], (0, 1, 2, 3), v.ovoV, (0, 2, 1, 4), (3, 4))
+    t3new += einsum(x358, (0, 1), t3[np.ix_(so,so,sO,sv,sv,sV)], (2, 3, 4, 5, 6, 1), (2, 3, 4, 5, 6, 0)) * -1.5
+    del x358
+    x359 = np.zeros((navir, nocc, nvir, nvir), dtype=np.float64)
+    x359 += einsum(v.ovvO, (0, 1, 2, 3), t3[np.ix_(so,so,sO,sv,sv,sV)], (0, 4, 3, 2, 5, 6), (6, 4, 5, 1))
+    t3new += einsum(t2[np.ix_(so,sO,sv,sv)], (0, 1, 2, 3), x359, (4, 5, 6, 3), (0, 5, 1, 2, 6, 4)) * 0.5
+    t3new += einsum(t2[np.ix_(so,sO,sv,sv)], (0, 1, 2, 3), x359, (4, 5, 6, 2), (0, 5, 1, 3, 6, 4)) * -0.5
+    del x359
+    x360 = np.zeros((naocc, naocc, nocc, nocc), dtype=np.float64)
+    x360 += einsum(t2[np.ix_(so,sO,sv,sv)], (0, 1, 2, 3), v.ovvO, (4, 2, 3, 5), (1, 5, 0, 4))
+    t3new += einsum(x360, (0, 1, 2, 3), t3[np.ix_(so,so,sO,sv,sv,sV)], (3, 4, 1, 5, 6, 7), (2, 4, 0, 5, 6, 7)) * 0.5
+    del x360
+    x361 = np.zeros((navir, nocc, nvir, nvir), dtype=np.float64)
+    x361 += einsum(v.ovvO, (0, 1, 2, 3), t3[np.ix_(so,so,sO,sv,sv,sV)], (0, 4, 3, 1, 5, 6), (6, 4, 5, 2))
+    t3new += einsum(t2[np.ix_(so,sO,sv,sv)], (0, 1, 2, 3), x361, (4, 5, 6, 3), (0, 5, 1, 2, 6, 4)) * -0.5
+    t3new += einsum(t2[np.ix_(so,sO,sv,sv)], (0, 1, 2, 3), x361, (4, 5, 6, 2), (0, 5, 1, 3, 6, 4)) * 0.5
+    del x361
+    x362 = np.zeros((naocc, naocc, nocc, nocc), dtype=np.float64)
+    x362 += einsum(t2[np.ix_(so,sO,sv,sv)], (0, 1, 2, 3), v.ovvO, (4, 3, 2, 5), (1, 5, 0, 4))
+    t3new += einsum(x362, (0, 1, 2, 3), t3[np.ix_(so,so,sO,sv,sv,sV)], (3, 4, 1, 5, 6, 7), (2, 4, 0, 5, 6, 7)) * -0.5
+    del x362
+    x363 = np.zeros((navir, nocc, nvir, nvir), dtype=np.float64)
+    x363 += einsum(v.ovvO, (0, 1, 2, 3), t3[np.ix_(so,so,sO,sv,sv,sV)], (4, 0, 3, 5, 2, 6), (6, 4, 5, 1))
+    t3new += einsum(t2[np.ix_(so,sO,sv,sv)], (0, 1, 2, 3), x363, (4, 5, 6, 3), (5, 0, 1, 6, 2, 4)) * 0.5
+    del x363
+    x364 = np.zeros((navir, nocc, nvir, nvir), dtype=np.float64)
+    x364 += einsum(v.ovvO, (0, 1, 2, 3), t3[np.ix_(so,so,sO,sv,sv,sV)], (4, 0, 3, 2, 5, 6), (6, 4, 5, 1))
+    t3new += einsum(t2[np.ix_(so,sO,sv,sv)], (0, 1, 2, 3), x364, (4, 5, 6, 3), (5, 0, 1, 6, 2, 4)) * -0.5
+    del x364
+    x365 = np.zeros((navir, nocc, nvir, nvir), dtype=np.float64)
+    x365 += einsum(v.ovvO, (0, 1, 2, 3), t3[np.ix_(so,so,sO,sv,sv,sV)], (4, 0, 3, 5, 1, 6), (6, 4, 5, 2))
+    t3new += einsum(t2[np.ix_(so,sO,sv,sv)], (0, 1, 2, 3), x365, (4, 5, 6, 3), (5, 0, 1, 6, 2, 4)) * -1.0
+    del x365
+    x366 = np.zeros((naocc, naocc, nocc, nocc), dtype=np.float64)
+    x366 += einsum(t2[np.ix_(so,sO,sv,sv)], (0, 1, 2, 3), v.ovvO, (4, 2, 3, 5), (1, 5, 0, 4))
+    t3new += einsum(x366, (0, 1, 2, 3), t3[np.ix_(so,so,sO,sv,sv,sV)], (4, 3, 1, 5, 6, 7), (4, 2, 0, 5, 6, 7))
+    del x366
+    x367 = np.zeros((navir, nocc, nvir, nvir), dtype=np.float64)
+    x367 += einsum(v.ovvO, (0, 1, 2, 3), t3[np.ix_(so,so,sO,sv,sv,sV)], (4, 0, 3, 5, 1, 6), (6, 4, 5, 2))
+    t3new += einsum(t2[np.ix_(so,sO,sv,sv)], (0, 1, 2, 3), x367, (4, 5, 6, 3), (5, 0, 1, 6, 2, 4)) * -0.5
+    del x367
+    x368 = np.zeros((navir, nocc, nvir, nvir), dtype=np.float64)
+    x368 += einsum(v.ovvO, (0, 1, 2, 3), t3[np.ix_(so,so,sO,sv,sv,sV)], (4, 0, 3, 1, 5, 6), (6, 4, 5, 2))
+    t3new += einsum(t2[np.ix_(so,sO,sv,sv)], (0, 1, 2, 3), x368, (4, 5, 6, 3), (5, 0, 1, 6, 2, 4)) * 0.5
+    del x368
+    x369 = np.zeros((navir, nocc, nvir, nvir), dtype=np.float64)
+    x369 += einsum(v.ovvO, (0, 1, 2, 3), t3[np.ix_(so,so,sO,sv,sv,sV)], (4, 0, 3, 2, 5, 6), (6, 4, 5, 1))
+    t3new += einsum(t2[np.ix_(so,sO,sv,sv)], (0, 1, 2, 3), x369, (4, 5, 6, 2), (5, 0, 1, 3, 6, 4)) * -1.0
+    del x369
+    x370 = np.zeros((naocc, naocc, nvir, nvir), dtype=np.float64)
+    x370 += einsum(t2[np.ix_(so,sO,sv,sv)], (0, 1, 2, 3), v.ovvO, (0, 3, 4, 5), (1, 5, 2, 4))
+    t3new += einsum(x370, (0, 1, 2, 3), t3[np.ix_(so,so,sO,sv,sv,sV)], (4, 5, 1, 3, 6, 7), (4, 5, 0, 2, 6, 7)) * -1.0
+    del x370
+    x371 = np.zeros((naocc, naocc, nvir, nvir), dtype=np.float64)
+    x371 += einsum(t2[np.ix_(so,sO,sv,sv)], (0, 1, 2, 3), v.ovvO, (0, 2, 4, 5), (1, 5, 3, 4))
+    t3new += einsum(x371, (0, 1, 2, 3), t3[np.ix_(so,so,sO,sv,sv,sV)], (4, 5, 1, 3, 6, 7), (4, 5, 0, 2, 6, 7)) * 2.0
+    del x371
+    x372 = np.zeros((naocc, naocc), dtype=np.float64)
+    x372 += einsum(t2[np.ix_(so,sO,sv,sv)], (0, 1, 2, 3), v.ovvO, (0, 2, 3, 4), (1, 4))
+    x373 = np.zeros((naocc, navir, nocc, nocc, nvir, nvir), dtype=np.float64)
+    x373 += einsum(x372, (0, 1), t3[np.ix_(so,so,sO,sv,sv,sV)], (2, 3, 1, 4, 5, 6), (0, 6, 2, 3, 4, 5))
+    del x372
+    t3new += einsum(x373, (0, 1, 2, 3, 4, 5), (2, 3, 0, 4, 5, 1)) * -1.0
+    t3new += einsum(x373, (0, 1, 2, 3, 4, 5), (2, 3, 0, 4, 5, 1)) * -1.0
+    del x373
+    x374 = np.zeros((naocc, naocc, nvir, nvir), dtype=np.float64)
+    x374 += einsum(t2[np.ix_(so,sO,sv,sv)], (0, 1, 2, 3), v.ovvO, (0, 4, 3, 5), (1, 5, 2, 4))
+    t3new += einsum(x374, (0, 1, 2, 3), t3[np.ix_(so,so,sO,sv,sv,sV)], (4, 5, 1, 3, 6, 7), (4, 5, 0, 2, 6, 7))
+    t3new += einsum(x374, (0, 1, 2, 3), t3[np.ix_(so,so,sO,sv,sv,sV)], (4, 5, 1, 6, 3, 7), (4, 5, 0, 6, 2, 7))
+    del x374
+    x375 = np.zeros((navir, nocc, nocc, nocc), dtype=np.float64)
+    x375 += einsum(v.ovvO, (0, 1, 2, 3), t3[np.ix_(so,so,sO,sv,sv,sV)], (4, 5, 3, 2, 1, 6), (6, 4, 5, 0))
+    t3new += einsum(t2[np.ix_(so,sO,sv,sv)], (0, 1, 2, 3), x375, (4, 5, 6, 0), (5, 6, 1, 3, 2, 4)) * -1.0
+    del x375
+    x376 = np.zeros((naocc, naocc, nvir, nvir), dtype=np.float64)
+    x376 += einsum(t2[np.ix_(so,sO,sv,sv)], (0, 1, 2, 3), v.ovvO, (0, 4, 2, 5), (1, 5, 3, 4))
+    t3new += einsum(x376, (0, 1, 2, 3), t3[np.ix_(so,so,sO,sv,sv,sV)], (4, 5, 1, 3, 6, 7), (4, 5, 0, 2, 6, 7)) * -1.0
+    del x376
+    x377 = np.zeros((naocc, naocc), dtype=np.float64)
+    x377 += einsum(t2[np.ix_(so,sO,sv,sv)], (0, 1, 2, 3), v.ovvO, (0, 3, 2, 4), (1, 4))
+    t3new += einsum(x377, (0, 1), t3[np.ix_(so,so,sO,sv,sv,sV)], (2, 3, 1, 4, 5, 6), (2, 3, 0, 4, 5, 6))
+    del x377
+    x378 = np.zeros((naocc, naocc, navir, navir, nocc, nocc), dtype=np.float64)
+    x378 += einsum(t2[np.ix_(so,sO,sv,sV)], (0, 1, 2, 3), v.ovOV, (4, 2, 5, 6), (1, 5, 3, 6, 0, 4))
+    t3new += einsum(t3[np.ix_(so,so,sO,sv,sv,sV)], (0, 1, 2, 3, 4, 5), x378, (6, 2, 7, 5, 8, 1), (8, 0, 6, 4, 3, 7)) * -1.0
+    x379 = np.zeros((naocc, navir, nocc, nocc, nvir, nvir), dtype=np.float64)
+    x379 += einsum(t3[np.ix_(so,so,sO,sv,sv,sV)], (0, 1, 2, 3, 4, 5), x378, (6, 2, 7, 5, 8, 0), (6, 7, 8, 1, 3, 4))
+    del x378
+    t3new += einsum(x379, (0, 1, 2, 3, 4, 5), (2, 3, 0, 4, 5, 1)) * -0.5
+    t3new += einsum(x379, (0, 1, 2, 3, 4, 5), (3, 2, 0, 5, 4, 1)) * -0.5
+    del x379
+    x380 = np.zeros((naocc, naocc, navir, navir, nocc, nocc), dtype=np.float64)
+    x380 += einsum(t2[np.ix_(so,sO,sv,sV)], (0, 1, 2, 3), v.oVvO, (4, 5, 2, 6), (1, 6, 3, 5, 0, 4))
+    x381 = np.zeros((naocc, navir, nocc, nocc, nvir, nvir), dtype=np.float64)
+    x381 += einsum(t3[np.ix_(so,so,sO,sv,sv,sV)], (0, 1, 2, 3, 4, 5), x380, (6, 2, 7, 5, 8, 0), (6, 7, 8, 1, 3, 4))
+    del x380
+    t3new += einsum(x381, (0, 1, 2, 3, 4, 5), (2, 3, 0, 4, 5, 1)) * 0.5
+    t3new += einsum(x381, (0, 1, 2, 3, 4, 5), (3, 2, 0, 5, 4, 1)) * 0.5
+    del x381
+    x382 = np.zeros((naocc, naocc, navir, navir, nocc, nocc), dtype=np.float64)
+    x382 += einsum(t2[np.ix_(so,sO,sv,sV)], (0, 1, 2, 3), v.ovOV, (4, 2, 5, 6), (1, 5, 3, 6, 0, 4))
+    t3new += einsum(t3[np.ix_(so,so,sO,sv,sv,sV)], (0, 1, 2, 3, 4, 5), x382, (6, 2, 7, 5, 8, 1), (0, 8, 6, 3, 4, 7)) * -1.0
+    del x382
+    x383 = np.zeros((naocc, navir, nocc, nocc, nvir, nvir), dtype=np.float64)
+    x383 += einsum(t2[np.ix_(so,sO,sv,sV)], (0, 1, 2, 3), x67, (4, 5, 0, 6), (1, 3, 4, 5, 2, 6))
+    del x67
+    t3new += einsum(x383, (0, 1, 2, 3, 4, 5), (2, 3, 0, 4, 5, 1)) * -0.5
+    t3new += einsum(x383, (0, 1, 2, 3, 4, 5), (3, 2, 0, 5, 4, 1)) * -0.5
+    del x383
+    x384 = np.zeros((naocc, navir, nocc, nocc, nvir, nvir), dtype=np.float64)
+    x384 += einsum(t2[np.ix_(so,sO,sv,sV)], (0, 1, 2, 3), x69, (4, 5, 0, 6), (1, 3, 4, 5, 2, 6))
+    del x69
+    t3new += einsum(x384, (0, 1, 2, 3, 4, 5), (2, 3, 0, 4, 5, 1)) * 0.5
+    t3new += einsum(x384, (0, 1, 2, 3, 4, 5), (3, 2, 0, 5, 4, 1)) * 0.5
+    del x384
+    x385 = np.zeros((naocc, navir, nocc, nocc, nvir, nvir), dtype=np.float64)
+    x385 += einsum(t2[np.ix_(so,sO,sv,sV)], (0, 1, 2, 3), x71, (4, 5, 0, 6), (1, 3, 4, 5, 2, 6))
+    del x71
+    t3new += einsum(x385, (0, 1, 2, 3, 4, 5), (3, 2, 0, 4, 5, 1)) * -1.0
+    t3new += einsum(x385, (0, 1, 2, 3, 4, 5), (2, 3, 0, 5, 4, 1)) * -1.0
+    del x385
+    x386 = np.zeros((naocc, naocc, navir, navir), dtype=np.float64)
+    x386 += einsum(t2[np.ix_(so,sO,sv,sV)], (0, 1, 2, 3), v.ovOV, (0, 2, 4, 5), (1, 4, 3, 5))
+    x387 = np.zeros((naocc, navir, nocc, nocc, nvir, nvir), dtype=np.float64)
+    x387 += einsum(x386, (0, 1, 2, 3), t3[np.ix_(so,so,sO,sv,sv,sV)], (4, 5, 1, 6, 7, 3), (0, 2, 4, 5, 6, 7))
+    del x386
+    t3new += einsum(x387, (0, 1, 2, 3, 4, 5), (2, 3, 0, 4, 5, 1)) * 2.0
+    t3new += einsum(x387, (0, 1, 2, 3, 4, 5), (3, 2, 0, 5, 4, 1)) * 2.0
+    del x387
+    x388 = np.zeros((naocc, naocc, navir, navir), dtype=np.float64)
+    x388 += einsum(t2[np.ix_(so,sO,sv,sV)], (0, 1, 2, 3), v.oVvO, (0, 4, 2, 5), (1, 5, 3, 4))
+    x389 = np.zeros((naocc, navir, nocc, nocc, nvir, nvir), dtype=np.float64)
+    x389 += einsum(x388, (0, 1, 2, 3), t3[np.ix_(so,so,sO,sv,sv,sV)], (4, 5, 1, 6, 7, 3), (0, 2, 4, 5, 6, 7))
+    del x388
+    t3new += einsum(x389, (0, 1, 2, 3, 4, 5), (2, 3, 0, 4, 5, 1)) * -1.0
+    t3new += einsum(x389, (0, 1, 2, 3, 4, 5), (3, 2, 0, 5, 4, 1)) * -1.0
+    del x389
+    x390 = np.zeros((navir, nocc, nocc, nvir), dtype=np.float64)
+    x390 += einsum(t2[np.ix_(so,so,sv,sv)], (0, 1, 2, 3), v.ovoV, (1, 3, 4, 5), (5, 0, 4, 2))
+    t3new += einsum(x390, (0, 1, 2, 3), t3[np.ix_(so,so,sO,sv,sV,sV)], (4, 2, 5, 6, 7, 0), (4, 1, 5, 6, 3, 7)) * -2.0
+    del x390
+    x391 = np.zeros((naocc, navir, nocc, nocc), dtype=np.float64)
+    x391 += einsum(v.ovoV, (0, 1, 2, 3), t3[np.ix_(so,so,sO,sv,sV,sV)], (2, 4, 5, 1, 6, 3), (5, 6, 4, 0))
+    t3new += einsum(t2[np.ix_(so,so,sv,sv)], (0, 1, 2, 3), x391, (4, 5, 6, 1), (6, 0, 4, 3, 2, 5)) * -0.5
+    del x391
+    x392 = np.zeros((naocc, navir, nocc, nocc), dtype=np.float64)
+    x392 += einsum(v.ovoV, (0, 1, 2, 3), t3[np.ix_(so,so,sO,sv,sV,sV)], (0, 4, 5, 1, 6, 3), (5, 6, 4, 2))
+    t3new += einsum(t2[np.ix_(so,so,sv,sv)], (0, 1, 2, 3), x392, (4, 5, 6, 1), (6, 0, 4, 3, 2, 5)) * 0.5
+    del x392
+    x393 = np.zeros((navir, nocc, nocc, nvir), dtype=np.float64)
+    x393 += einsum(t2[np.ix_(so,so,sv,sv)], (0, 1, 2, 3), v.ovoV, (1, 2, 4, 5), (5, 0, 4, 3))
+    t3new += einsum(x393, (0, 1, 2, 3), t3[np.ix_(so,so,sO,sv,sV,sV)], (4, 2, 5, 6, 7, 0), (4, 1, 5, 6, 3, 7))
+    del x393
+    x394 = np.zeros((navir, nocc, nocc, nvir), dtype=np.float64)
+    x394 += einsum(t2[np.ix_(so,so,sv,sv)], (0, 1, 2, 3), v.ovoV, (4, 3, 1, 5), (5, 0, 4, 2))
+    t3new += einsum(x394, (0, 1, 2, 3), t3[np.ix_(so,so,sO,sv,sV,sV)], (4, 2, 5, 6, 7, 0), (4, 1, 5, 6, 3, 7))
+    del x394
+    x395 = np.zeros((naocc, naocc, navir, nocc, nocc, nvir), dtype=np.float64)
+    x395 += einsum(t2[np.ix_(so,sO,sv,sv)], (0, 1, 2, 3), v.ovOV, (4, 3, 5, 6), (1, 5, 6, 0, 4, 2))
+    x396 = np.zeros((naocc, navir, nocc, nocc, nvir, nvir), dtype=np.float64)
+    x396 += einsum(t3[np.ix_(so,so,sO,sv,sV,sV)], (0, 1, 2, 3, 4, 5), x395, (6, 2, 5, 7, 1, 8), (6, 4, 7, 0, 8, 3))
+    del x395
+    t3new += einsum(x396, (0, 1, 2, 3, 4, 5), (2, 3, 0, 4, 5, 1)) * -1.0
+    t3new += einsum(x396, (0, 1, 2, 3, 4, 5), (3, 2, 0, 5, 4, 1)) * -0.5
+    del x396
+    x397 = np.zeros((naocc, naocc, navir, nocc, nocc, nvir), dtype=np.float64)
+    x397 += einsum(t2[np.ix_(so,sO,sv,sv)], (0, 1, 2, 3), v.ovOV, (4, 2, 5, 6), (1, 5, 6, 0, 4, 3))
+    t3new += einsum(t3[np.ix_(so,so,sO,sv,sV,sV)], (0, 1, 2, 3, 4, 5), x397, (6, 2, 5, 7, 1, 8), (7, 0, 6, 8, 3, 4))
+    t3new += einsum(t3[np.ix_(so,so,sO,sv,sV,sV)], (0, 1, 2, 3, 4, 5), x397, (6, 2, 5, 7, 0, 8), (1, 7, 6, 8, 3, 4)) * 0.5
+    del x397
+    x398 = np.zeros((naocc, naocc, navir, nocc, nocc, nvir), dtype=np.float64)
+    x398 += einsum(t2[np.ix_(so,sO,sv,sv)], (0, 1, 2, 3), v.oVvO, (4, 5, 3, 6), (1, 6, 5, 0, 4, 2))
+    t3new += einsum(t3[np.ix_(so,so,sO,sv,sV,sV)], (0, 1, 2, 3, 4, 5), x398, (6, 2, 5, 7, 1, 8), (0, 7, 6, 3, 8, 4)) * 0.5
+    del x398
+    x399 = np.zeros((naocc, naocc, navir, nocc, nocc, nvir), dtype=np.float64)
+    x399 += einsum(t2[np.ix_(so,sO,sv,sv)], (0, 1, 2, 3), v.oVvO, (4, 5, 2, 6), (1, 6, 5, 0, 4, 3))
+    t3new += einsum(t3[np.ix_(so,so,sO,sv,sV,sV)], (0, 1, 2, 3, 4, 5), x399, (6, 2, 5, 7, 0, 8), (1, 7, 6, 8, 3, 4)) * -0.5
+    del x399
+    x400 = np.zeros((naocc, naocc, navir, nvir), dtype=np.float64)
+    x400 += einsum(t2[np.ix_(so,sO,sv,sv)], (0, 1, 2, 3), v.ovOV, (0, 3, 4, 5), (1, 4, 5, 2))
+    t3new += einsum(x400, (0, 1, 2, 3), t3[np.ix_(so,so,sO,sv,sV,sV)], (4, 5, 1, 6, 7, 2), (5, 4, 0, 3, 6, 7))
+    del x400
+    x401 = np.zeros((navir, nocc, nocc, nocc), dtype=np.float64)
+    x401 += einsum(v.ovOV, (0, 1, 2, 3), t3[np.ix_(so,so,sO,sv,sV,sV)], (4, 5, 2, 1, 6, 3), (6, 4, 5, 0))
+    t3new += einsum(t2[np.ix_(so,sO,sv,sv)], (0, 1, 2, 3), x401, (4, 5, 6, 0), (6, 5, 1, 3, 2, 4)) * 0.5
+    del x401
+    x402 = np.zeros((navir, nocc, nocc, nocc), dtype=np.float64)
+    x402 += einsum(v.oVvO, (0, 1, 2, 3), t3[np.ix_(so,so,sO,sv,sV,sV)], (4, 5, 3, 2, 6, 1), (6, 4, 5, 0))
+    t3new += einsum(t2[np.ix_(so,sO,sv,sv)], (0, 1, 2, 3), x402, (4, 5, 6, 0), (6, 5, 1, 3, 2, 4)) * -0.5
+    del x402
+    x403 = np.zeros((naocc, naocc, navir, nvir), dtype=np.float64)
+    x403 += einsum(t2[np.ix_(so,sO,sv,sv)], (0, 1, 2, 3), v.ovOV, (0, 2, 4, 5), (1, 4, 5, 3))
+    t3new += einsum(x403, (0, 1, 2, 3), t3[np.ix_(so,so,sO,sv,sV,sV)], (4, 5, 1, 6, 7, 2), (5, 4, 0, 3, 6, 7)) * -2.0
+    del x403
+    x404 = np.zeros((naocc, naocc, navir, nvir), dtype=np.float64)
+    x404 += einsum(t2[np.ix_(so,sO,sv,sv)], (0, 1, 2, 3), v.oVvO, (0, 4, 2, 5), (1, 5, 4, 3))
+    t3new += einsum(x404, (0, 1, 2, 3), t3[np.ix_(so,so,sO,sv,sV,sV)], (4, 5, 1, 6, 7, 2), (5, 4, 0, 3, 6, 7))
+    del x404
+    x405 = np.zeros((naocc, navir, nvir, nvir), dtype=np.float64)
+    x405 += einsum(v.ovvO, (0, 1, 2, 3), t3[np.ix_(so,sO,sO,sv,sv,sV)], (0, 4, 3, 5, 2, 6), (4, 6, 5, 1))
+    t3new += einsum(t2[np.ix_(so,so,sv,sv)], (0, 1, 2, 3), x405, (4, 5, 6, 2), (0, 1, 4, 6, 3, 5)) * 0.5
+    del x405
+    x406 = np.zeros((naocc, navir, nvir, nvir), dtype=np.float64)
+    x406 += einsum(v.ovvO, (0, 1, 2, 3), t3[np.ix_(so,sO,sO,sv,sv,sV)], (0, 4, 3, 2, 5, 6), (4, 6, 5, 1))
+    t3new += einsum(t2[np.ix_(so,so,sv,sv)], (0, 1, 2, 3), x406, (4, 5, 6, 2), (0, 1, 4, 6, 3, 5)) * -0.5
+    del x406
+    x407 = np.zeros((naocc, navir, nvir, nvir), dtype=np.float64)
+    x407 += einsum(v.ovvO, (0, 1, 2, 3), t3[np.ix_(so,sO,sO,sv,sv,sV)], (0, 4, 3, 5, 1, 6), (4, 6, 5, 2))
+    t3new += einsum(t2[np.ix_(so,so,sv,sv)], (0, 1, 2, 3), x407, (4, 5, 6, 2), (0, 1, 4, 6, 3, 5)) * -0.5
+    del x407
+    x408 = np.zeros((naocc, navir, nvir, nvir), dtype=np.float64)
+    x408 += einsum(v.ovvO, (0, 1, 2, 3), t3[np.ix_(so,sO,sO,sv,sv,sV)], (0, 4, 3, 1, 5, 6), (4, 6, 5, 2))
+    t3new += einsum(t2[np.ix_(so,so,sv,sv)], (0, 1, 2, 3), x408, (4, 5, 6, 2), (0, 1, 4, 6, 3, 5)) * 0.5
+    del x408
+    x409 = np.zeros((naocc, nocc, nocc, nvir), dtype=np.float64)
+    x409 += einsum(v.ovOV, (0, 1, 2, 3), t3[np.ix_(so,sO,sO,sv,sv,sV)], (4, 5, 2, 6, 1, 3), (5, 4, 0, 6))
+    t3new += einsum(t2[np.ix_(so,so,sv,sV)], (0, 1, 2, 3), x409, (4, 5, 1, 6), (0, 5, 4, 2, 6, 3)) * -1.0
+    t3new += einsum(t2[np.ix_(so,so,sv,sV)], (0, 1, 2, 3), x409, (4, 5, 0, 6), (1, 5, 4, 2, 6, 3))
+    del x409
+    x410 = np.zeros((naocc, navir, navir, nocc), dtype=np.float64)
+    x410 += einsum(t2[np.ix_(so,so,sv,sV)], (0, 1, 2, 3), v.ovOV, (1, 2, 4, 5), (4, 3, 5, 0))
+    t3new += einsum(x410, (0, 1, 2, 3), t3[np.ix_(so,sO,sO,sv,sv,sV)], (4, 5, 0, 6, 7, 2), (3, 4, 5, 7, 6, 1))
+    del x410
+    x411 = np.zeros((naocc, navir, navir, nocc, nocc, nocc), dtype=np.float64)
+    x411 += einsum(t2[np.ix_(so,so,sv,sV)], (0, 1, 2, 3), v.ovOV, (4, 2, 5, 6), (5, 3, 6, 1, 0, 4))
+    t3new += einsum(t3[np.ix_(so,sO,sO,sv,sv,sV)], (0, 1, 2, 3, 4, 5), x411, (2, 6, 5, 7, 8, 0), (7, 8, 1, 4, 3, 6)) * 0.5
+    del x411
+    x412 = np.zeros((naocc, navir, navir, nocc, nocc, nocc), dtype=np.float64)
+    x412 += einsum(t2[np.ix_(so,so,sv,sV)], (0, 1, 2, 3), v.oVvO, (4, 5, 2, 6), (6, 3, 5, 1, 0, 4))
+    t3new += einsum(t3[np.ix_(so,sO,sO,sv,sv,sV)], (0, 1, 2, 3, 4, 5), x412, (2, 6, 5, 7, 8, 0), (7, 8, 1, 4, 3, 6)) * -0.5
+    del x412
+    x413 = np.zeros((naocc, nocc, nocc, nvir), dtype=np.float64)
+    x413 += einsum(v.ovOV, (0, 1, 2, 3), t3[np.ix_(so,sO,sO,sv,sv,sV)], (4, 5, 2, 1, 6, 3), (5, 4, 0, 6))
+    t3new += einsum(t2[np.ix_(so,so,sv,sV)], (0, 1, 2, 3), x413, (4, 5, 0, 6), (1, 5, 4, 6, 2, 3)) * 0.5
+    del x413
+    x414 = np.zeros((naocc, nocc, nocc, nvir), dtype=np.float64)
+    x414 += einsum(v.oVvO, (0, 1, 2, 3), t3[np.ix_(so,sO,sO,sv,sv,sV)], (4, 5, 3, 2, 6, 1), (5, 4, 0, 6))
+    t3new += einsum(t2[np.ix_(so,so,sv,sV)], (0, 1, 2, 3), x414, (4, 5, 0, 6), (1, 5, 4, 6, 2, 3)) * -0.5
+    del x414
+    x415 = np.zeros((naocc, navir, navir, nocc), dtype=np.float64)
+    x415 += einsum(t2[np.ix_(so,so,sv,sV)], (0, 1, 2, 3), v.ovOV, (0, 2, 4, 5), (4, 3, 5, 1))
+    t3new += einsum(x415, (0, 1, 2, 3), t3[np.ix_(so,sO,sO,sv,sv,sV)], (4, 5, 0, 6, 7, 2), (3, 4, 5, 7, 6, 1)) * -2.0
+    del x415
+    x416 = np.zeros((naocc, navir, navir, nocc), dtype=np.float64)
+    x416 += einsum(t2[np.ix_(so,so,sv,sV)], (0, 1, 2, 3), v.oVvO, (0, 4, 2, 5), (5, 3, 4, 1))
+    t3new += einsum(x416, (0, 1, 2, 3), t3[np.ix_(so,sO,sO,sv,sv,sV)], (4, 5, 0, 6, 7, 2), (3, 4, 5, 7, 6, 1))
+    del x416
+    x417 = np.zeros((naocc, navir, nocc, nocc, nvir, nvir), dtype=np.float64)
+    x417 += einsum(t3[np.ix_(so,sO,sO,sv,sV,sV)], (0, 1, 2, 3, 4, 5), x138, (2, 5, 6, 7, 0, 8), (1, 4, 6, 7, 8, 3))
+    del x138
+    t3new += einsum(x417, (0, 1, 2, 3, 4, 5), (2, 3, 0, 4, 5, 1)) * -0.5
+    t3new += einsum(x417, (0, 1, 2, 3, 4, 5), (3, 2, 0, 5, 4, 1)) * -0.5
+    del x417
+    x418 = np.zeros((naocc, navir, nocc, nocc, nocc, nvir), dtype=np.float64)
+    x418 += einsum(t2[np.ix_(so,so,sv,sv)], (0, 1, 2, 3), v.oVvO, (4, 5, 3, 6), (6, 5, 0, 1, 4, 2))
+    x419 = np.zeros((naocc, navir, nocc, nocc, nvir, nvir), dtype=np.float64)
+    x419 += einsum(t3[np.ix_(so,sO,sO,sv,sV,sV)], (0, 1, 2, 3, 4, 5), x418, (2, 5, 6, 7, 0, 8), (1, 4, 6, 7, 8, 3))
+    del x418
+    t3new += einsum(x419, (0, 1, 2, 3, 4, 5), (2, 3, 0, 4, 5, 1)) * 0.5
+    t3new += einsum(x419, (0, 1, 2, 3, 4, 5), (3, 2, 0, 5, 4, 1)) * 0.5
+    del x419
+    x420 = np.zeros((naocc, navir, nocc, nocc), dtype=np.float64)
+    x420 += einsum(v.ovOV, (0, 1, 2, 3), t3[np.ix_(so,sO,sO,sv,sV,sV)], (4, 5, 2, 1, 6, 3), (5, 6, 4, 0))
+    t3new += einsum(t2[np.ix_(so,so,sv,sv)], (0, 1, 2, 3), x420, (4, 5, 6, 1), (0, 6, 4, 2, 3, 5)) * -0.5
+    del x420
+    x421 = np.zeros((naocc, navir, nocc, nocc), dtype=np.float64)
+    x421 += einsum(v.oVvO, (0, 1, 2, 3), t3[np.ix_(so,sO,sO,sv,sV,sV)], (4, 5, 3, 2, 6, 1), (5, 6, 4, 0))
+    t3new += einsum(t2[np.ix_(so,so,sv,sv)], (0, 1, 2, 3), x421, (4, 5, 6, 1), (0, 6, 4, 2, 3, 5)) * 0.5
+    del x421
+    x422 = np.zeros((naocc, navir, nocc, nvir), dtype=np.float64)
+    x422 += einsum(t2[np.ix_(so,so,sv,sv)], (0, 1, 2, 3), v.ovOV, (1, 3, 4, 5), (4, 5, 0, 2))
+    t3new += einsum(x422, (0, 1, 2, 3), t3[np.ix_(so,sO,sO,sv,sV,sV)], (4, 5, 0, 6, 7, 1), (2, 4, 5, 3, 6, 7)) * 2.0
+    del x422
+    x423 = np.zeros((naocc, navir, nocc, nvir), dtype=np.float64)
+    x423 += einsum(t2[np.ix_(so,so,sv,sv)], (0, 1, 2, 3), v.ovOV, (1, 2, 4, 5), (4, 5, 0, 3))
+    t3new += einsum(x423, (0, 1, 2, 3), t3[np.ix_(so,sO,sO,sv,sV,sV)], (4, 5, 0, 6, 7, 1), (2, 4, 5, 3, 6, 7)) * -1.0
+    del x423
+    x424 = np.zeros((naocc, navir, nocc, nvir), dtype=np.float64)
+    x424 += einsum(t2[np.ix_(so,so,sv,sv)], (0, 1, 2, 3), v.oVvO, (1, 4, 3, 5), (5, 4, 0, 2))
+    t3new += einsum(x424, (0, 1, 2, 3), t3[np.ix_(so,sO,sO,sv,sV,sV)], (4, 5, 0, 6, 7, 1), (2, 4, 5, 3, 6, 7)) * -1.0
+    del x424
+    x425 = np.zeros((naocc, naocc, navir, navir, nocc, nocc), dtype=np.float64)
+    x425 += einsum(t2[np.ix_(so,sO,sV,sv)], (0, 1, 2, 3), v.ovOV, (4, 3, 5, 6), (1, 5, 2, 6, 0, 4))
+    t3new += einsum(t3[np.ix_(so,so,sO,sv,sv,sV)], (0, 1, 2, 3, 4, 5), x425, (6, 2, 7, 5, 8, 1), (8, 0, 6, 4, 3, 7))
+    t3new += einsum(t3[np.ix_(so,so,sO,sv,sv,sV)], (0, 1, 2, 3, 4, 5), x425, (6, 2, 7, 5, 8, 0), (8, 1, 6, 3, 4, 7)) * 0.5
+    del x425
+    x426 = np.zeros((naocc, naocc, navir, navir, nocc, nocc), dtype=np.float64)
+    x426 += einsum(t2[np.ix_(so,sO,sV,sv)], (0, 1, 2, 3), v.oVvO, (4, 5, 3, 6), (1, 6, 2, 5, 0, 4))
+    t3new += einsum(t3[np.ix_(so,so,sO,sv,sv,sV)], (0, 1, 2, 3, 4, 5), x426, (6, 2, 7, 5, 8, 0), (8, 1, 6, 3, 4, 7)) * -0.5
+    del x426
+    x427 = np.zeros((naocc, naocc, navir, navir), dtype=np.float64)
+    x427 += einsum(t2[np.ix_(so,sO,sV,sv)], (0, 1, 2, 3), v.ovOV, (0, 3, 4, 5), (1, 4, 2, 5))
+    x428 = np.zeros((naocc, navir, nocc, nocc, nvir, nvir), dtype=np.float64)
+    x428 += einsum(x427, (0, 1, 2, 3), t3[np.ix_(so,so,sO,sv,sv,sV)], (4, 5, 1, 6, 7, 3), (0, 2, 4, 5, 6, 7))
+    del x427
+    t3new += einsum(x428, (0, 1, 2, 3, 4, 5), (2, 3, 0, 4, 5, 1)) * -1.0
+    t3new += einsum(x428, (0, 1, 2, 3, 4, 5), (3, 2, 0, 5, 4, 1)) * -1.0
+    del x428
+    x429 = np.zeros((naocc, naocc, navir, navir), dtype=np.float64)
+    x429 += einsum(t2[np.ix_(so,sO,sV,sv)], (0, 1, 2, 3), v.oVvO, (0, 4, 3, 5), (1, 5, 2, 4))
+    t3new += einsum(x429, (0, 1, 2, 3), t3[np.ix_(so,so,sO,sv,sv,sV)], (4, 5, 1, 6, 7, 3), (4, 5, 0, 6, 7, 2))
+    del x429
+    x430 = np.zeros((naocc, nocc, nocc, nocc), dtype=np.float64)
+    x430 += einsum(t1[np.ix_(so,sv)], (0, 1), v.ovoO, (2, 1, 3, 4), (4, 0, 3, 2))
+    x431 = np.zeros((naocc, nocc, nocc, nvir), dtype=np.float64)
+    x431 += einsum(t1[np.ix_(so,sv)], (0, 1), x430, (2, 3, 4, 0), (2, 3, 4, 1))
+    t3new += einsum(t2[np.ix_(so,so,sv,sV)], (0, 1, 2, 3), x431, (4, 5, 0, 6), (1, 5, 4, 2, 6, 3)) * -1.0
+    x432 = np.zeros((naocc, navir, nocc, nocc, nvir, nvir), dtype=np.float64)
+    x432 += einsum(t2[np.ix_(so,so,sv,sV)], (0, 1, 2, 3), x431, (4, 5, 1, 6), (4, 3, 5, 0, 6, 2))
+    del x431
+    t3new += einsum(x432, (0, 1, 2, 3, 4, 5), (2, 3, 0, 4, 5, 1))
+    t3new += einsum(x432, (0, 1, 2, 3, 4, 5), (3, 2, 0, 5, 4, 1))
+    del x432
+    x433 = np.zeros((naocc, nocc, nocc, nvir), dtype=np.float64)
+    x433 += einsum(t1[np.ix_(so,sv)], (0, 1), x430, (2, 3, 0, 4), (2, 3, 4, 1))
+    del x430
+    t3new += einsum(t2[np.ix_(so,so,sv,sV)], (0, 1, 2, 3), x433, (4, 5, 1, 6), (5, 0, 4, 6, 2, 3)) * -1.0
+    t3new += einsum(t2[np.ix_(so,so,sv,sV)], (0, 1, 2, 3), x433, (4, 5, 0, 6), (1, 5, 4, 6, 2, 3)) * -1.0
+    del x433
+    x434 = np.zeros((naocc, navir, nocc, nocc, nocc, nocc), dtype=np.float64)
+    x434 += einsum(t2[np.ix_(so,so,sv,sV)], (0, 1, 2, 3), v.ovoO, (4, 2, 5, 6), (6, 3, 1, 0, 5, 4))
+    x435 = np.zeros((naocc, navir, nocc, nocc, nocc, nvir), dtype=np.float64)
+    x435 += einsum(t1[np.ix_(so,sv)], (0, 1), x434, (2, 3, 4, 5, 6, 0), (2, 3, 4, 5, 6, 1))
+    del x434
+    t3new += einsum(t1[np.ix_(so,sv)], (0, 1), x435, (2, 3, 4, 5, 0, 6), (4, 5, 2, 1, 6, 3)) * -1.0
+    del x435
+    x436 = np.zeros((naocc, navir, nocc, nocc, nocc, nvir), dtype=np.float64)
+    x436 += einsum(t2[np.ix_(so,sO,sv,sV)], (0, 1, 2, 3), x41, (4, 5, 0, 6), (1, 3, 4, 5, 6, 2))
+    x437 = np.zeros((naocc, navir, nocc, nocc, nvir, nvir), dtype=np.float64)
+    x437 += einsum(t1[np.ix_(so,sv)], (0, 1), x436, (2, 3, 4, 5, 0, 6), (2, 3, 4, 5, 1, 6))
+    del x436
+    t3new += einsum(x437, (0, 1, 2, 3, 4, 5), (2, 3, 0, 4, 5, 1))
+    t3new += einsum(x437, (0, 1, 2, 3, 4, 5), (3, 2, 0, 5, 4, 1))
+    del x437
+    x438 = np.zeros((naocc, navir, nocc, nocc, nocc, nvir), dtype=np.float64)
+    x438 += einsum(t2[np.ix_(so,sO,sv,sV)], (0, 1, 2, 3), x41, (4, 5, 6, 0), (1, 3, 4, 6, 5, 2))
+    x439 = np.zeros((naocc, navir, nocc, nocc, nvir, nvir), dtype=np.float64)
+    x439 += einsum(t1[np.ix_(so,sv)], (0, 1), x438, (2, 3, 4, 0, 5, 6), (2, 3, 4, 5, 1, 6))
+    del x438
+    t3new += einsum(x439, (0, 1, 2, 3, 4, 5), (2, 3, 0, 5, 4, 1))
+    t3new += einsum(x439, (0, 1, 2, 3, 4, 5), (3, 2, 0, 4, 5, 1))
+    del x439
+    x440 = np.zeros((naocc, navir, nocc, nocc, nocc, nvir), dtype=np.float64)
+    x440 += einsum(t1[np.ix_(so,sv)], (0, 1), x259, (2, 3, 4, 5, 6, 0), (2, 3, 4, 5, 6, 1))
+    del x259
+    x441 = np.zeros((naocc, navir, nocc, nocc, nvir, nvir), dtype=np.float64)
+    x441 += einsum(t1[np.ix_(so,sv)], (0, 1), x440, (2, 3, 4, 0, 5, 6), (2, 3, 4, 5, 1, 6))
+    del x440
+    t3new += einsum(x441, (0, 1, 2, 3, 4, 5), (2, 3, 0, 5, 4, 1))
+    t3new += einsum(x441, (0, 1, 2, 3, 4, 5), (3, 2, 0, 4, 5, 1))
+    del x441
+    x442 = np.zeros((navir, nocc, nocc, nvir), dtype=np.float64)
+    x442 += einsum(t1[np.ix_(so,sv)], (0, 1), v.ovvV, (2, 1, 3, 4), (4, 0, 2, 3))
+    x443 = np.zeros((navir, nocc, nocc, nocc), dtype=np.float64)
+    x443 += einsum(t1[np.ix_(so,sv)], (0, 1), x442, (2, 3, 4, 1), (2, 0, 3, 4))
+    t3new += einsum(t2[np.ix_(so,sO,sv,sv)], (0, 1, 2, 3), x443, (4, 5, 6, 0), (5, 6, 1, 3, 2, 4))
+    del x443
+    x444 = np.zeros((naocc, navir, nocc, nocc, nvir, nvir), dtype=np.float64)
+    x444 += einsum(t2[np.ix_(so,sO,sv,sV)], (0, 1, 2, 3), x90, (4, 5, 0, 6), (1, 3, 4, 5, 2, 6))
+    del x90
+    t3new += einsum(x444, (0, 1, 2, 3, 4, 5), (2, 3, 0, 4, 5, 1)) * -1.0
+    t3new += einsum(x444, (0, 1, 2, 3, 4, 5), (3, 2, 0, 5, 4, 1)) * -1.0
+    del x444
+    x445 = np.zeros((naocc, navir, nocc, nocc, nocc, nvir), dtype=np.float64)
+    x445 += einsum(t2[np.ix_(so,sO,sv,sv)], (0, 1, 2, 3), x442, (4, 5, 6, 3), (1, 4, 5, 0, 6, 2))
+    x446 = np.zeros((naocc, navir, nocc, nocc, nvir, nvir), dtype=np.float64)
+    x446 += einsum(t1[np.ix_(so,sv)], (0, 1), x445, (2, 3, 4, 5, 0, 6), (2, 3, 4, 5, 1, 6))
+    del x445
+    t3new += einsum(x446, (0, 1, 2, 3, 4, 5), (2, 3, 0, 4, 5, 1)) * -1.0
+    t3new += einsum(x446, (0, 1, 2, 3, 4, 5), (3, 2, 0, 5, 4, 1)) * -1.0
+    del x446
+    x447 = np.zeros((navir, nocc, nocc, nvir), dtype=np.float64)
+    x447 += einsum(t1[np.ix_(so,sv)], (0, 1), v.ovvV, (2, 3, 1, 4), (4, 0, 2, 3))
+    x448 = np.zeros((naocc, navir, nocc, nocc, nocc, nvir), dtype=np.float64)
+    x448 += einsum(t2[np.ix_(so,sO,sv,sv)], (0, 1, 2, 3), x447, (4, 5, 6, 3), (1, 4, 5, 0, 6, 2))
+    t3new += einsum(t1[np.ix_(so,sv)], (0, 1), x448, (2, 3, 4, 5, 0, 6), (4, 5, 2, 1, 6, 3))
+    del x448
+    x449 = np.zeros((naocc, navir, nocc, nocc, nocc, nvir), dtype=np.float64)
+    x449 += einsum(t1[np.ix_(so,sv)], (0, 1), x113, (2, 3, 4, 5, 1, 6), (2, 3, 0, 4, 5, 6))
+    del x113
+    x450 = np.zeros((naocc, navir, nocc, nocc, nvir, nvir), dtype=np.float64)
+    x450 += einsum(t1[np.ix_(so,sv)], (0, 1), x449, (2, 3, 4, 5, 0, 6), (2, 3, 4, 5, 1, 6))
+    del x449
+    t3new += einsum(x450, (0, 1, 2, 3, 4, 5), (2, 3, 0, 4, 5, 1)) * -1.0
+    t3new += einsum(x450, (0, 1, 2, 3, 4, 5), (3, 2, 0, 5, 4, 1)) * -1.0
+    del x450
+    x451 = np.zeros((naocc, navir, nocc, nocc, nocc, nvir), dtype=np.float64)
+    x451 += einsum(t2[np.ix_(so,sO,sv,sv)], (0, 1, 2, 3), x447, (4, 5, 6, 2), (1, 4, 5, 0, 6, 3))
+    del x447
+    t3new += einsum(t1[np.ix_(so,sv)], (0, 1), x451, (2, 3, 4, 5, 0, 6), (4, 5, 2, 6, 1, 3))
+    del x451
+    x452 = np.zeros((naocc, navir, nocc, nocc, nocc, nvir), dtype=np.float64)
+    x452 += einsum(t1[np.ix_(so,sv)], (0, 1), x294, (2, 3, 4, 5, 6, 1), (2, 3, 0, 4, 5, 6))
+    del x294
+    x453 = np.zeros((naocc, navir, nocc, nocc, nvir, nvir), dtype=np.float64)
+    x453 += einsum(t1[np.ix_(so,sv)], (0, 1), x452, (2, 3, 4, 5, 0, 6), (2, 3, 4, 5, 1, 6))
+    del x452
+    t3new += einsum(x453, (0, 1, 2, 3, 4, 5), (2, 3, 0, 5, 4, 1)) * -1.0
+    t3new += einsum(x453, (0, 1, 2, 3, 4, 5), (3, 2, 0, 4, 5, 1)) * -1.0
+    del x453
+    x454 = np.zeros((naocc, navir, nocc, nocc, nocc, nvir), dtype=np.float64)
+    x454 += einsum(t2[np.ix_(so,sO,sv,sv)], (0, 1, 2, 3), x442, (4, 5, 6, 2), (1, 4, 5, 0, 6, 3))
+    del x442
+    t3new += einsum(t1[np.ix_(so,sv)], (0, 1), x454, (2, 3, 4, 5, 0, 6), (5, 4, 2, 6, 1, 3))
+    del x454
+    x455 = np.zeros((naocc, navir, nocc, nvir), dtype=np.float64)
+    x455 += einsum(t1[np.ix_(so,sV)], (0, 1), v.ovoO, (0, 2, 3, 4), (4, 1, 3, 2))
+    x456 = np.zeros((naocc, navir, nocc, nocc), dtype=np.float64)
+    x456 += einsum(t1[np.ix_(so,sv)], (0, 1), x455, (2, 3, 4, 1), (2, 3, 0, 4))
+    t3new += einsum(t2[np.ix_(so,so,sv,sv)], (0, 1, 2, 3), x456, (4, 5, 6, 1), (6, 0, 4, 3, 2, 5)) * -1.0
+    del x456
+    x457 = np.zeros((naocc, navir, nocc, nvir), dtype=np.float64)
+    x457 += einsum(t1[np.ix_(so,sV)], (0, 1), v.ovoO, (2, 3, 0, 4), (4, 1, 2, 3))
+    x458 = np.zeros((naocc, navir, nocc, nocc), dtype=np.float64)
+    x458 += einsum(t1[np.ix_(so,sv)], (0, 1), x457, (2, 3, 4, 1), (2, 3, 0, 4))
+    x459 = np.zeros((naocc, navir, nocc, nocc, nvir, nvir), dtype=np.float64)
+    x459 += einsum(t2[np.ix_(so,so,sv,sv)], (0, 1, 2, 3), x458, (4, 5, 6, 1), (4, 5, 6, 0, 2, 3))
+    del x458
+    t3new += einsum(x459, (0, 1, 2, 3, 4, 5), (2, 3, 0, 5, 4, 1))
+    t3new += einsum(x459, (0, 1, 2, 3, 4, 5), (3, 2, 0, 4, 5, 1))
+    del x459
+    x460 = np.zeros((naocc, navir, nocc, nocc, nocc, nvir), dtype=np.float64)
+    x460 += einsum(t2[np.ix_(so,so,sv,sv)], (0, 1, 2, 3), x457, (4, 5, 6, 3), (4, 5, 0, 1, 6, 2))
+    del x457
+    x461 = np.zeros((naocc, navir, nocc, nocc, nvir, nvir), dtype=np.float64)
+    x461 += einsum(t1[np.ix_(so,sv)], (0, 1), x460, (2, 3, 4, 5, 0, 6), (2, 3, 4, 5, 1, 6))
+    del x460
+    t3new += einsum(x461, (0, 1, 2, 3, 4, 5), (3, 2, 0, 4, 5, 1))
+    t3new += einsum(x461, (0, 1, 2, 3, 4, 5), (2, 3, 0, 5, 4, 1))
+    del x461
+    x462 = np.zeros((naocc, navir, nocc, nocc, nocc, nvir), dtype=np.float64)
+    x462 += einsum(t2[np.ix_(so,so,sv,sv)], (0, 1, 2, 3), x455, (4, 5, 6, 3), (4, 5, 0, 1, 6, 2))
+    del x455
+    t3new += einsum(t1[np.ix_(so,sv)], (0, 1), x462, (2, 3, 4, 5, 0, 6), (5, 4, 2, 1, 6, 3)) * -1.0
+    del x462
+    x463 = np.zeros((navir, nocc, nocc, nvir), dtype=np.float64)
+    x463 += einsum(t1[np.ix_(so,sV)], (0, 1), v.ooov, (2, 3, 0, 4), (1, 2, 3, 4))
+    x464 = np.zeros((navir, nocc, nocc, nocc), dtype=np.float64)
+    x464 += einsum(t1[np.ix_(so,sv)], (0, 1), x463, (2, 3, 4, 1), (2, 0, 4, 3))
+    t3new += einsum(t2[np.ix_(so,sO,sv,sv)], (0, 1, 2, 3), x464, (4, 5, 0, 6), (5, 6, 1, 3, 2, 4)) * -1.0
+    del x464
+    x465 = np.zeros((navir, nocc, nocc, nvir), dtype=np.float64)
+    x465 += einsum(t1[np.ix_(so,sV)], (0, 1), v.ooov, (2, 0, 3, 4), (1, 2, 3, 4))
+    x466 = np.zeros((navir, nocc, nocc, nocc), dtype=np.float64)
+    x466 += einsum(t1[np.ix_(so,sv)], (0, 1), x465, (2, 3, 4, 1), (2, 0, 3, 4))
+    t3new += einsum(t2[np.ix_(so,sO,sv,sv)], (0, 1, 2, 3), x466, (4, 5, 6, 0), (6, 5, 1, 3, 2, 4)) * -1.0
+    del x466
+    x467 = np.zeros((naocc, navir, nocc, nocc, nocc, nvir), dtype=np.float64)
+    x467 += einsum(t2[np.ix_(so,sO,sv,sv)], (0, 1, 2, 3), x463, (4, 5, 6, 3), (1, 4, 0, 6, 5, 2))
+    x468 = np.zeros((naocc, navir, nocc, nocc, nvir, nvir), dtype=np.float64)
+    x468 += einsum(t1[np.ix_(so,sv)], (0, 1), x467, (2, 3, 4, 0, 5, 6), (2, 3, 4, 5, 1, 6))
+    del x467
+    t3new += einsum(x468, (0, 1, 2, 3, 4, 5), (3, 2, 0, 4, 5, 1))
+    t3new += einsum(x468, (0, 1, 2, 3, 4, 5), (2, 3, 0, 5, 4, 1))
+    del x468
+    x469 = np.zeros((naocc, navir, nocc, nocc, nocc, nvir), dtype=np.float64)
+    x469 += einsum(t2[np.ix_(so,sO,sv,sv)], (0, 1, 2, 3), x465, (4, 5, 6, 3), (1, 4, 0, 5, 6, 2))
+    t3new += einsum(t1[np.ix_(so,sv)], (0, 1), x469, (2, 3, 4, 5, 0, 6), (5, 4, 2, 1, 6, 3)) * -1.0
+    del x469
+    x470 = np.zeros((naocc, navir, nocc, nocc, nocc, nvir), dtype=np.float64)
+    x470 += einsum(t2[np.ix_(so,sO,sv,sv)], (0, 1, 2, 3), x463, (4, 5, 6, 2), (1, 4, 0, 6, 5, 3))
+    del x463
+    t3new += einsum(t1[np.ix_(so,sv)], (0, 1), x470, (2, 3, 4, 0, 5, 6), (4, 5, 2, 6, 1, 3)) * -1.0
+    del x470
+    x471 = np.zeros((naocc, navir, nocc, nocc, nocc, nvir), dtype=np.float64)
+    x471 += einsum(t2[np.ix_(so,sO,sv,sv)], (0, 1, 2, 3), x465, (4, 5, 6, 2), (1, 4, 0, 5, 6, 3))
+    del x465
+    t3new += einsum(t1[np.ix_(so,sv)], (0, 1), x471, (2, 3, 4, 5, 0, 6), (5, 4, 2, 6, 1, 3)) * -1.0
+    del x471
+    x472 = np.zeros((navir, nvir, nvir, nvir), dtype=np.float64)
+    x472 += einsum(t1[np.ix_(so,sV)], (0, 1), v.ovvv, (0, 2, 3, 4), (1, 2, 3, 4))
+    x473 = np.zeros((navir, nocc, nvir, nvir), dtype=np.float64)
+    x473 += einsum(t1[np.ix_(so,sv)], (0, 1), x472, (2, 1, 3, 4), (2, 0, 4, 3))
+    t3new += einsum(t2[np.ix_(so,sO,sv,sv)], (0, 1, 2, 3), x473, (4, 5, 3, 6), (5, 0, 1, 6, 2, 4))
+    t3new += einsum(t2[np.ix_(so,sO,sv,sv)], (0, 1, 2, 3), x473, (4, 5, 2, 6), (5, 0, 1, 3, 6, 4))
+    del x473
+    x474 = np.zeros((navir, nocc, nvir, nvir), dtype=np.float64)
+    x474 += einsum(t1[np.ix_(so,sv)], (0, 1), x472, (2, 3, 4, 1), (2, 0, 3, 4))
+    del x472
+    t3new += einsum(t2[np.ix_(so,sO,sv,sv)], (0, 1, 2, 3), x474, (4, 5, 2, 6), (0, 5, 1, 3, 6, 4))
+    x475 = np.zeros((naocc, navir, nocc, nocc, nvir, nvir), dtype=np.float64)
+    x475 += einsum(t2[np.ix_(so,sO,sv,sv)], (0, 1, 2, 3), x474, (4, 5, 3, 6), (1, 4, 5, 0, 2, 6))
+    del x474
+    t3new += einsum(x475, (0, 1, 2, 3, 4, 5), (2, 3, 0, 5, 4, 1)) * -1.0
+    t3new += einsum(x475, (0, 1, 2, 3, 4, 5), (3, 2, 0, 4, 5, 1)) * -1.0
+    del x475
+    x476 = np.zeros((naocc, nocc, nocc, nocc), dtype=np.float64)
+    x476 += einsum(t1[np.ix_(sO,sv)], (0, 1), v.ooov, (2, 3, 4, 1), (0, 2, 3, 4))
+    x477 = np.zeros((naocc, nocc, nocc, nvir), dtype=np.float64)
+    x477 += einsum(t1[np.ix_(so,sv)], (0, 1), x476, (2, 3, 0, 4), (2, 3, 4, 1))
+    t3new += einsum(t2[np.ix_(so,so,sv,sV)], (0, 1, 2, 3), x477, (4, 5, 0, 6), (1, 5, 4, 2, 6, 3)) * -1.0
+    x478 = np.zeros((naocc, navir, nocc, nocc, nvir, nvir), dtype=np.float64)
+    x478 += einsum(t2[np.ix_(so,so,sv,sV)], (0, 1, 2, 3), x477, (4, 5, 1, 6), (4, 3, 0, 5, 6, 2))
+    del x477
+    t3new += einsum(x478, (0, 1, 2, 3, 4, 5), (3, 2, 0, 4, 5, 1))
+    t3new += einsum(x478, (0, 1, 2, 3, 4, 5), (2, 3, 0, 5, 4, 1))
+    del x478
+    x479 = np.zeros((naocc, nocc, nocc, nvir), dtype=np.float64)
+    x479 += einsum(t1[np.ix_(so,sv)], (0, 1), x476, (2, 3, 4, 0), (2, 4, 3, 1))
+    del x476
+    t3new += einsum(t2[np.ix_(so,so,sv,sV)], (0, 1, 2, 3), x479, (4, 1, 5, 6), (5, 0, 4, 6, 2, 3)) * -1.0
+    t3new += einsum(t2[np.ix_(so,so,sv,sV)], (0, 1, 2, 3), x479, (4, 0, 5, 6), (1, 5, 4, 6, 2, 3)) * -1.0
+    del x479
+    x480 = np.zeros((naocc, navir, nocc, nvir), dtype=np.float64)
+    x480 += einsum(t1[np.ix_(sO,sv)], (0, 1), v.ovvV, (2, 3, 1, 4), (0, 4, 2, 3))
+    x481 = np.zeros((naocc, navir, nocc, nocc), dtype=np.float64)
+    x481 += einsum(t1[np.ix_(so,sv)], (0, 1), x480, (2, 3, 4, 1), (2, 3, 0, 4))
+    x482 = np.zeros((naocc, navir, nocc, nocc, nvir, nvir), dtype=np.float64)
+    x482 += einsum(t2[np.ix_(so,so,sv,sv)], (0, 1, 2, 3), x481, (4, 5, 6, 1), (4, 5, 6, 0, 2, 3))
+    del x481
+    t3new += einsum(x482, (0, 1, 2, 3, 4, 5), (2, 3, 0, 5, 4, 1)) * -1.0
+    t3new += einsum(x482, (0, 1, 2, 3, 4, 5), (3, 2, 0, 4, 5, 1)) * -1.0
+    del x482
+    x483 = np.zeros((naocc, navir, nocc, nvir), dtype=np.float64)
+    x483 += einsum(t1[np.ix_(sO,sv)], (0, 1), v.ovvV, (2, 1, 3, 4), (0, 4, 2, 3))
+    x484 = np.zeros((naocc, navir, nocc, nocc), dtype=np.float64)
+    x484 += einsum(t1[np.ix_(so,sv)], (0, 1), x483, (2, 3, 4, 1), (2, 3, 0, 4))
+    t3new += einsum(t2[np.ix_(so,so,sv,sv)], (0, 1, 2, 3), x484, (4, 5, 6, 1), (6, 0, 4, 3, 2, 5))
+    del x484
+    x485 = np.zeros((naocc, nocc, nvir, nvir), dtype=np.float64)
+    x485 += einsum(t1[np.ix_(sO,sv)], (0, 1), v.ovvv, (2, 3, 4, 1), (0, 2, 3, 4))
+    x486 = np.zeros((naocc, nocc, nocc, nvir), dtype=np.float64)
+    x486 += einsum(t1[np.ix_(so,sv)], (0, 1), x485, (2, 3, 1, 4), (2, 0, 3, 4))
+    t3new += einsum(t2[np.ix_(so,so,sv,sV)], (0, 1, 2, 3), x486, (4, 5, 1, 6), (5, 0, 4, 6, 2, 3))
+    t3new += einsum(t2[np.ix_(so,so,sv,sV)], (0, 1, 2, 3), x486, (4, 5, 0, 6), (1, 5, 4, 6, 2, 3))
+    del x486
+    x487 = np.zeros((naocc, nocc, nvir, nvir), dtype=np.float64)
+    x487 += einsum(t1[np.ix_(sO,sv)], (0, 1), v.ovvv, (2, 1, 3, 4), (0, 2, 3, 4))
+    x488 = np.zeros((naocc, nocc, nocc, nvir), dtype=np.float64)
+    x488 += einsum(t1[np.ix_(so,sv)], (0, 1), x487, (2, 3, 4, 1), (2, 0, 3, 4))
+    t3new += einsum(t2[np.ix_(so,so,sv,sV)], (0, 1, 2, 3), x488, (4, 5, 0, 6), (1, 5, 4, 2, 6, 3))
+    x489 = np.zeros((naocc, navir, nocc, nocc, nvir, nvir), dtype=np.float64)
+    x489 += einsum(t2[np.ix_(so,so,sv,sV)], (0, 1, 2, 3), x488, (4, 5, 1, 6), (4, 3, 5, 0, 2, 6))
+    del x488
+    t3new += einsum(x489, (0, 1, 2, 3, 4, 5), (2, 3, 0, 5, 4, 1)) * -1.0
+    t3new += einsum(x489, (0, 1, 2, 3, 4, 5), (3, 2, 0, 4, 5, 1)) * -1.0
+    del x489
+    x490 = np.zeros((naocc, navir, nocc, nocc, nocc, nvir), dtype=np.float64)
+    x490 += einsum(t2[np.ix_(so,so,sv,sv)], (0, 1, 2, 3), x483, (4, 5, 6, 3), (4, 5, 0, 1, 6, 2))
+    del x483
+    t3new += einsum(t1[np.ix_(so,sv)], (0, 1), x490, (2, 3, 4, 5, 0, 6), (5, 4, 2, 1, 6, 3))
+    del x490
+    x491 = np.zeros((naocc, navir, nocc, nocc, nocc, nvir), dtype=np.float64)
+    x491 += einsum(t2[np.ix_(so,so,sv,sv)], (0, 1, 2, 3), x480, (4, 5, 6, 3), (4, 5, 0, 1, 6, 2))
+    del x480
+    x492 = np.zeros((naocc, navir, nocc, nocc, nvir, nvir), dtype=np.float64)
+    x492 += einsum(t1[np.ix_(so,sv)], (0, 1), x491, (2, 3, 4, 5, 0, 6), (2, 3, 4, 5, 1, 6))
+    del x491
+    t3new += einsum(x492, (0, 1, 2, 3, 4, 5), (3, 2, 0, 4, 5, 1)) * -1.0
+    t3new += einsum(x492, (0, 1, 2, 3, 4, 5), (2, 3, 0, 5, 4, 1)) * -1.0
+    del x492
+    x493 = np.zeros((naocc, navir, nocc, nocc, nocc, nvir), dtype=np.float64)
+    x493 += einsum(t2[np.ix_(so,so,sv,sV)], (0, 1, 2, 3), x487, (4, 5, 6, 2), (4, 3, 1, 0, 5, 6))
+    del x487
+    t3new += einsum(t1[np.ix_(so,sv)], (0, 1), x493, (2, 3, 4, 5, 0, 6), (4, 5, 2, 1, 6, 3))
+    del x493
+    x494 = np.zeros((naocc, navir, nocc, nocc, nocc, nvir), dtype=np.float64)
+    x494 += einsum(t2[np.ix_(so,so,sv,sV)], (0, 1, 2, 3), x485, (4, 5, 2, 6), (4, 3, 1, 0, 5, 6))
+    del x485
+    t3new += einsum(t1[np.ix_(so,sv)], (0, 1), x494, (2, 3, 4, 5, 0, 6), (4, 5, 2, 6, 1, 3))
+    del x494
+    x495 = np.zeros((naocc, navir, nocc, nocc), dtype=np.float64)
+    x495 += einsum(t1[np.ix_(so,sV)], (0, 1), t1[np.ix_(sO,sv)], (2, 3), v.ooov, (4, 5, 0, 3), (2, 1, 4, 5))
+    x496 = np.zeros((naocc, navir, nocc, nocc, nvir, nvir), dtype=np.float64)
+    x496 += einsum(t2[np.ix_(so,so,sv,sv)], (0, 1, 2, 3), x495, (4, 5, 1, 6), (4, 5, 0, 6, 2, 3))
+    del x495
+    t3new += einsum(x496, (0, 1, 2, 3, 4, 5), (2, 3, 0, 4, 5, 1))
+    t3new += einsum(x496, (0, 1, 2, 3, 4, 5), (3, 2, 0, 5, 4, 1))
+    del x496
+    x497 = np.zeros((naocc, navir, nocc, nocc), dtype=np.float64)
+    x497 += einsum(t1[np.ix_(so,sV)], (0, 1), t1[np.ix_(sO,sv)], (2, 3), v.ooov, (4, 0, 5, 3), (2, 1, 4, 5))
+    t3new += einsum(t2[np.ix_(so,so,sv,sv)], (0, 1, 2, 3), x497, (4, 5, 6, 1), (6, 0, 4, 3, 2, 5)) * -1.0
+    del x497
+    x498 = np.zeros((naocc, navir, nvir, nvir), dtype=np.float64)
+    x498 += einsum(t1[np.ix_(so,sV)], (0, 1), t1[np.ix_(sO,sv)], (2, 3), v.ovvv, (0, 3, 4, 5), (2, 1, 4, 5))
+    x499 = np.zeros((naocc, navir, nocc, nocc, nvir, nvir), dtype=np.float64)
+    x499 += einsum(t2[np.ix_(so,so,sv,sv)], (0, 1, 2, 3), x498, (4, 5, 3, 6), (4, 5, 0, 1, 2, 6))
+    del x498
+    t3new += einsum(x499, (0, 1, 2, 3, 4, 5), (2, 3, 0, 4, 5, 1)) * -1.0
+    t3new += einsum(x499, (0, 1, 2, 3, 4, 5), (3, 2, 0, 5, 4, 1)) * -1.0
+    del x499
+    x500 = np.zeros((naocc, navir, nvir, nvir), dtype=np.float64)
+    x500 += einsum(t1[np.ix_(so,sV)], (0, 1), t1[np.ix_(sO,sv)], (2, 3), v.ovvv, (0, 4, 5, 3), (2, 1, 4, 5))
+    t3new += einsum(t2[np.ix_(so,so,sv,sv)], (0, 1, 2, 3), x500, (4, 5, 2, 6), (0, 1, 4, 6, 3, 5))
+    del x500
+    x501 = np.zeros((naocc, navir, nocc, nocc, nocc, nvir), dtype=np.float64)
+    x501 += einsum(t2[np.ix_(so,sO,sV,sv)], (0, 1, 2, 3), x41, (4, 5, 6, 0), (1, 2, 4, 6, 5, 3))
+    t3new += einsum(t1[np.ix_(so,sv)], (0, 1), x501, (2, 3, 4, 0, 5, 6), (4, 5, 2, 6, 1, 3)) * -1.0
+    del x501
+    x502 = np.zeros((naocc, navir, nocc, nocc, nocc, nvir), dtype=np.float64)
+    x502 += einsum(t2[np.ix_(so,sO,sV,sv)], (0, 1, 2, 3), x41, (4, 5, 0, 6), (1, 2, 4, 5, 6, 3))
+    del x41
+    t3new += einsum(t1[np.ix_(so,sv)], (0, 1), x502, (2, 3, 4, 5, 0, 6), (5, 4, 2, 6, 1, 3)) * -1.0
+    del x502
+    x503 = np.zeros((naocc, navir, nocc, nocc, nocc, nvir), dtype=np.float64)
+    x503 += einsum(t1[np.ix_(so,sv)], (0, 1), x318, (2, 3, 4, 5, 6, 0), (2, 3, 4, 5, 6, 1))
+    del x318
+    t3new += einsum(t1[np.ix_(so,sv)], (0, 1), x503, (2, 3, 4, 0, 5, 6), (4, 5, 2, 6, 1, 3)) * -1.0
+    del x503
+    x504 = np.zeros((naocc, navir, nocc, nocc, nocc, nvir), dtype=np.float64)
+    x504 += einsum(t1[np.ix_(so,sv)], (0, 1), x322, (2, 3, 4, 5, 6, 1), (2, 3, 0, 4, 5, 6))
+    del x322
+    t3new += einsum(t1[np.ix_(so,sv)], (0, 1), x504, (2, 3, 4, 5, 0, 6), (5, 4, 2, 1, 6, 3))
+    del x504
+    x505 = np.zeros((naocc, navir, nocc, nocc, nocc, nvir), dtype=np.float64)
+    x505 += einsum(t1[np.ix_(so,sv)], (0, 1), x115, (2, 3, 4, 5, 1, 6), (2, 3, 0, 4, 5, 6))
+    del x115
+    t3new += einsum(t1[np.ix_(so,sv)], (0, 1), x505, (2, 3, 4, 5, 0, 6), (5, 4, 2, 6, 1, 3))
+    del x505
+    x506 = np.zeros((naocc, navir, nocc, nocc, nocc, nvir), dtype=np.float64)
+    x506 += einsum(x9, (0, 1, 2, 3), t3[np.ix_(so,so,sO,sv,sv,sV)], (1, 4, 5, 3, 6, 7), (5, 7, 0, 4, 2, 6))
+    t3new += einsum(t1[np.ix_(so,sv)], (0, 1), x506, (2, 3, 4, 5, 0, 6), (4, 5, 2, 1, 6, 3)) * -1.0
+    del x506
+    x507 = np.zeros((naocc, navir, nocc, nocc, nocc, nvir), dtype=np.float64)
+    x507 += einsum(x9, (0, 1, 2, 3), t3[np.ix_(so,so,sO,sv,sv,sV)], (2, 4, 5, 3, 6, 7), (5, 7, 0, 4, 1, 6))
+    t3new += einsum(t1[np.ix_(so,sv)], (0, 1), x507, (2, 3, 4, 5, 0, 6), (4, 5, 2, 1, 6, 3))
+    del x507
+    x508 = np.zeros((naocc, navir, nocc, nocc, nocc, nvir), dtype=np.float64)
+    x508 += einsum(x9, (0, 1, 2, 3), t3[np.ix_(so,so,sO,sv,sv,sV)], (2, 4, 5, 6, 3, 7), (5, 7, 0, 4, 1, 6))
+    t3new += einsum(t1[np.ix_(so,sv)], (0, 1), x508, (2, 3, 4, 5, 0, 6), (4, 5, 2, 6, 1, 3))
+    del x508
+    x509 = np.zeros((naocc, navir, nocc, nocc, nocc, nvir), dtype=np.float64)
+    x509 += einsum(x9, (0, 1, 2, 3), t3[np.ix_(so,so,sO,sv,sv,sV)], (4, 2, 5, 3, 6, 7), (5, 7, 0, 4, 1, 6))
+    t3new += einsum(t1[np.ix_(so,sv)], (0, 1), x509, (2, 3, 4, 5, 0, 6), (5, 4, 2, 1, 6, 3))
+    del x509
+    x510 = np.zeros((naocc, navir, nocc, nocc, nocc, nvir), dtype=np.float64)
+    x510 += einsum(x9, (0, 1, 2, 3), t3[np.ix_(so,so,sO,sv,sv,sV)], (4, 1, 5, 3, 6, 7), (5, 7, 0, 4, 2, 6))
+    t3new += einsum(t1[np.ix_(so,sv)], (0, 1), x510, (2, 3, 4, 5, 0, 6), (5, 4, 2, 6, 1, 3))
+    del x510
+    x511 = np.zeros((naocc, navir, nocc, nocc, nocc, nvir), dtype=np.float64)
+    x511 += einsum(x9, (0, 1, 2, 3), t3[np.ix_(so,so,sO,sv,sv,sV)], (4, 1, 5, 6, 3, 7), (5, 7, 0, 4, 2, 6))
+    t3new += einsum(t1[np.ix_(so,sv)], (0, 1), x511, (2, 3, 4, 5, 0, 6), (5, 4, 2, 6, 1, 3)) * -2.0
+    del x511
+    x512 = np.zeros((naocc, navir, nocc, nocc, nocc, nvir), dtype=np.float64)
+    x512 += einsum(x9, (0, 1, 2, 3), t3[np.ix_(so,so,sO,sv,sv,sV)], (4, 2, 5, 6, 3, 7), (5, 7, 0, 4, 1, 6))
+    t3new += einsum(t1[np.ix_(so,sv)], (0, 1), x512, (2, 3, 4, 5, 0, 6), (5, 4, 2, 6, 1, 3))
+    del x512
+    x513 = np.zeros((naocc, navir, nocc, nocc, nocc, nvir), dtype=np.float64)
+    x513 += einsum(t1[np.ix_(so,sv)], (0, 1), x334, (2, 3, 4, 5, 6, 0), (2, 3, 4, 5, 6, 1))
+    del x334
+    t3new += einsum(t1[np.ix_(so,sv)], (0, 1), x513, (2, 3, 4, 5, 0, 6), (4, 5, 2, 1, 6, 3))
+    del x513
+    x514 = np.zeros((naocc, navir, nocc, nocc, nocc, nvir), dtype=np.float64)
+    x514 += einsum(x0, (0, 1), t3[np.ix_(so,so,sO,sv,sv,sV)], (2, 3, 4, 1, 5, 6), (4, 6, 2, 3, 0, 5))
+    t3new += einsum(t1[np.ix_(so,sv)], (0, 1), x514, (2, 3, 4, 5, 0, 6), (4, 5, 2, 1, 6, 3)) * -2.0
+    del x514
+    x515 = np.zeros((naocc, navir, nocc, nocc, nocc, nvir), dtype=np.float64)
+    x515 += einsum(x15, (0, 1), t3[np.ix_(so,so,sO,sv,sv,sV)], (2, 3, 4, 1, 5, 6), (4, 6, 2, 3, 0, 5))
+    t3new += einsum(t1[np.ix_(so,sv)], (0, 1), x515, (2, 3, 4, 5, 0, 6), (4, 5, 2, 1, 6, 3))
+    del x515
+    x516 = np.zeros((naocc, navir, nocc, nocc, nocc, nvir), dtype=np.float64)
+    x516 += einsum(x0, (0, 1), t3[np.ix_(so,so,sO,sv,sv,sV)], (2, 3, 4, 5, 1, 6), (4, 6, 2, 3, 0, 5))
+    t3new += einsum(t1[np.ix_(so,sv)], (0, 1), x516, (2, 3, 4, 5, 0, 6), (4, 5, 2, 6, 1, 3)) * -2.0
+    del x516
+    x517 = np.zeros((naocc, navir, nocc, nocc, nocc, nvir), dtype=np.float64)
+    x517 += einsum(x15, (0, 1), t3[np.ix_(so,so,sO,sv,sv,sV)], (2, 3, 4, 5, 1, 6), (4, 6, 2, 3, 0, 5))
+    t3new += einsum(t1[np.ix_(so,sv)], (0, 1), x517, (2, 3, 4, 5, 0, 6), (4, 5, 2, 6, 1, 3))
+    del x517
+    x518 = np.zeros((navir, navir, nocc, nvir), dtype=np.float64)
+    x518 += einsum(t1[np.ix_(so,sV)], (0, 1), v.ovoV, (0, 2, 3, 4), (1, 4, 3, 2))
+    x519 = np.zeros((navir, navir, nocc, nocc), dtype=np.float64)
+    x519 += einsum(t1[np.ix_(so,sv)], (0, 1), x518, (2, 3, 4, 1), (2, 3, 0, 4))
+    del x518
+    t3new += einsum(x519, (0, 1, 2, 3), t3[np.ix_(so,so,sO,sv,sv,sV)], (3, 4, 5, 6, 7, 1), (2, 4, 5, 6, 7, 0)) * -1.0
+    del x519
+    x520 = np.zeros((navir, navir, nocc, nvir), dtype=np.float64)
+    x520 += einsum(t1[np.ix_(so,sV)], (0, 1), v.ovoV, (2, 3, 0, 4), (1, 4, 2, 3))
+    x521 = np.zeros((navir, navir, nocc, nocc), dtype=np.float64)
+    x521 += einsum(t1[np.ix_(so,sv)], (0, 1), x520, (2, 3, 4, 1), (2, 3, 0, 4))
+    del x520
+    t3new += einsum(x521, (0, 1, 2, 3), t3[np.ix_(so,so,sO,sv,sv,sV)], (3, 4, 5, 6, 7, 1), (2, 4, 5, 6, 7, 0))
+    t3new += einsum(x521, (0, 1, 2, 3), t3[np.ix_(so,so,sO,sv,sv,sV)], (4, 3, 5, 6, 7, 1), (4, 2, 5, 6, 7, 0))
+    del x521
+    x522 = np.zeros((navir, navir, nocc, nvir), dtype=np.float64)
+    x522 += einsum(t1[np.ix_(so,sV)], (0, 1), v.ovoV, (0, 2, 3, 4), (1, 4, 3, 2))
+    x523 = np.zeros((naocc, navir, nocc, nocc, nocc, nvir), dtype=np.float64)
+    x523 += einsum(x522, (0, 1, 2, 3), t3[np.ix_(so,so,sO,sv,sv,sV)], (4, 5, 6, 3, 7, 1), (6, 0, 4, 5, 2, 7))
+    del x522
+    t3new += einsum(t1[np.ix_(so,sv)], (0, 1), x523, (2, 3, 4, 5, 0, 6), (4, 5, 2, 1, 6, 3)) * -0.5
+    del x523
+    x524 = np.zeros((navir, navir, nocc, nvir), dtype=np.float64)
+    x524 += einsum(t1[np.ix_(so,sV)], (0, 1), v.ovoV, (2, 3, 0, 4), (1, 4, 2, 3))
+    x525 = np.zeros((naocc, navir, nocc, nocc, nocc, nvir), dtype=np.float64)
+    x525 += einsum(x524, (0, 1, 2, 3), t3[np.ix_(so,so,sO,sv,sv,sV)], (4, 5, 6, 3, 7, 1), (6, 0, 4, 5, 2, 7))
+    t3new += einsum(t1[np.ix_(so,sv)], (0, 1), x525, (2, 3, 4, 5, 0, 6), (4, 5, 2, 1, 6, 3)) * 0.5
+    del x525
+    x526 = np.zeros((naocc, navir, nocc, nocc, nocc, nvir), dtype=np.float64)
+    x526 += einsum(x524, (0, 1, 2, 3), t3[np.ix_(so,so,sO,sv,sv,sV)], (4, 5, 6, 7, 3, 1), (6, 0, 4, 5, 2, 7))
+    del x524
+    t3new += einsum(t1[np.ix_(so,sv)], (0, 1), x526, (2, 3, 4, 5, 0, 6), (4, 5, 2, 6, 1, 3))
+    del x526
+    x527 = np.zeros((navir, nocc), dtype=np.float64)
+    x527 += einsum(t1[np.ix_(so,sv)], (0, 1), v.ovoV, (0, 1, 2, 3), (3, 2))
+    x528 = np.zeros((navir, navir), dtype=np.float64)
+    x528 += einsum(t1[np.ix_(so,sV)], (0, 1), x527, (2, 0), (1, 2))
+    del x527
+    t3new += einsum(x528, (0, 1), t3[np.ix_(so,so,sO,sv,sv,sV)], (2, 3, 4, 5, 6, 1), (2, 3, 4, 5, 6, 0)) * -2.0
+    del x528
+    x529 = np.zeros((navir, nocc), dtype=np.float64)
+    x529 += einsum(t1[np.ix_(so,sv)], (0, 1), v.ovoV, (2, 1, 0, 3), (3, 2))
+    x530 = np.zeros((navir, navir), dtype=np.float64)
+    x530 += einsum(t1[np.ix_(so,sV)], (0, 1), x529, (2, 0), (1, 2))
+    del x529
+    t3new += einsum(x530, (0, 1), t3[np.ix_(so,so,sO,sv,sv,sV)], (2, 3, 4, 5, 6, 1), (2, 3, 4, 5, 6, 0))
+    del x530
+    x531 = np.zeros((naocc, naocc, nocc, nvir), dtype=np.float64)
+    x531 += einsum(t1[np.ix_(sO,sv)], (0, 1), v.ovvO, (2, 3, 1, 4), (0, 4, 2, 3))
+    x532 = np.zeros((naocc, naocc, nocc, nocc), dtype=np.float64)
+    x532 += einsum(t1[np.ix_(so,sv)], (0, 1), x531, (2, 3, 4, 1), (2, 3, 0, 4))
+    t3new += einsum(x532, (0, 1, 2, 3), t3[np.ix_(so,so,sO,sv,sv,sV)], (3, 4, 1, 5, 6, 7), (2, 4, 0, 5, 6, 7)) * 0.5
+    del x532
+    x533 = np.zeros((naocc, naocc, nocc, nvir), dtype=np.float64)
+    x533 += einsum(t1[np.ix_(sO,sv)], (0, 1), v.ovvO, (2, 1, 3, 4), (0, 4, 2, 3))
+    x534 = np.zeros((naocc, naocc, nocc, nocc), dtype=np.float64)
+    x534 += einsum(t1[np.ix_(so,sv)], (0, 1), x533, (2, 3, 4, 1), (2, 3, 0, 4))
+    t3new += einsum(x534, (0, 1, 2, 3), t3[np.ix_(so,so,sO,sv,sv,sV)], (3, 4, 1, 5, 6, 7), (2, 4, 0, 5, 6, 7)) * -0.5
+    del x534
+    x535 = np.zeros((naocc, naocc, nocc, nvir), dtype=np.float64)
+    x535 += einsum(t1[np.ix_(sO,sv)], (0, 1), v.ovvO, (2, 3, 1, 4), (0, 4, 2, 3))
+    x536 = np.zeros((naocc, naocc, nocc, nocc), dtype=np.float64)
+    x536 += einsum(t1[np.ix_(so,sv)], (0, 1), x535, (2, 3, 4, 1), (2, 3, 0, 4))
+    del x535
+    t3new += einsum(x536, (0, 1, 2, 3), t3[np.ix_(so,so,sO,sv,sv,sV)], (4, 3, 1, 5, 6, 7), (4, 2, 0, 5, 6, 7))
+    del x536
+    x537 = np.zeros((naocc, navir, nocc, nocc, nocc, nvir), dtype=np.float64)
+    x537 += einsum(x533, (0, 1, 2, 3), t3[np.ix_(so,so,sO,sv,sv,sV)], (4, 5, 1, 3, 6, 7), (0, 7, 4, 5, 2, 6))
+    del x533
+    t3new += einsum(t1[np.ix_(so,sv)], (0, 1), x537, (2, 3, 4, 5, 0, 6), (4, 5, 2, 1, 6, 3)) * -1.0
+    del x537
+    x538 = np.zeros((naocc, navir, nocc, nocc, nocc, nvir), dtype=np.float64)
+    x538 += einsum(x531, (0, 1, 2, 3), t3[np.ix_(so,so,sO,sv,sv,sV)], (4, 5, 1, 3, 6, 7), (0, 7, 4, 5, 2, 6))
+    t3new += einsum(t1[np.ix_(so,sv)], (0, 1), x538, (2, 3, 4, 5, 0, 6), (4, 5, 2, 1, 6, 3))
+    del x538
+    x539 = np.zeros((naocc, navir, nocc, nocc, nocc, nvir), dtype=np.float64)
+    x539 += einsum(x531, (0, 1, 2, 3), t3[np.ix_(so,so,sO,sv,sv,sV)], (4, 5, 1, 6, 3, 7), (0, 7, 4, 5, 2, 6))
+    del x531
+    t3new += einsum(t1[np.ix_(so,sv)], (0, 1), x539, (2, 3, 4, 5, 0, 6), (4, 5, 2, 6, 1, 3))
+    del x539
+    x540 = np.zeros((naocc, nvir), dtype=np.float64)
+    x540 += einsum(t1[np.ix_(so,sv)], (0, 1), v.ovvO, (0, 1, 2, 3), (3, 2))
+    x541 = np.zeros((naocc, naocc), dtype=np.float64)
+    x541 += einsum(t1[np.ix_(sO,sv)], (0, 1), x540, (2, 1), (0, 2))
+    del x540
+    t3new += einsum(x541, (0, 1), t3[np.ix_(so,so,sO,sv,sv,sV)], (2, 3, 1, 4, 5, 6), (2, 3, 0, 4, 5, 6)) * -2.0
+    del x541
+    x542 = np.zeros((naocc, nvir), dtype=np.float64)
+    x542 += einsum(t1[np.ix_(so,sv)], (0, 1), v.ovvO, (0, 2, 1, 3), (3, 2))
+    x543 = np.zeros((naocc, naocc), dtype=np.float64)
+    x543 += einsum(t1[np.ix_(sO,sv)], (0, 1), x542, (2, 1), (0, 2))
+    del x542
+    t3new += einsum(x543, (0, 1), t3[np.ix_(so,so,sO,sv,sv,sV)], (2, 3, 1, 4, 5, 6), (2, 3, 0, 4, 5, 6))
+    del x543
+    x544 = np.zeros((naocc, naocc, navir, nocc), dtype=np.float64)
+    x544 += einsum(t1[np.ix_(sO,sv)], (0, 1), v.ovOV, (2, 1, 3, 4), (0, 3, 4, 2))
+    x545 = np.zeros((naocc, naocc, navir, navir), dtype=np.float64)
+    x545 += einsum(t1[np.ix_(so,sV)], (0, 1), x544, (2, 3, 4, 0), (2, 3, 1, 4))
+    x546 = np.zeros((naocc, navir, nocc, nocc, nvir, nvir), dtype=np.float64)
+    x546 += einsum(x545, (0, 1, 2, 3), t3[np.ix_(so,so,sO,sv,sv,sV)], (4, 5, 1, 6, 7, 3), (0, 2, 4, 5, 6, 7))
+    del x545
+    t3new += einsum(x546, (0, 1, 2, 3, 4, 5), (2, 3, 0, 4, 5, 1)) * -1.0
+    t3new += einsum(x546, (0, 1, 2, 3, 4, 5), (3, 2, 0, 5, 4, 1)) * -1.0
+    del x546
+    x547 = np.zeros((naocc, naocc, navir, nocc), dtype=np.float64)
+    x547 += einsum(t1[np.ix_(sO,sv)], (0, 1), v.oVvO, (2, 3, 1, 4), (0, 4, 3, 2))
+    x548 = np.zeros((naocc, naocc, navir, navir), dtype=np.float64)
+    x548 += einsum(t1[np.ix_(so,sV)], (0, 1), x547, (2, 3, 4, 0), (2, 3, 1, 4))
+    del x547
+    t3new += einsum(x548, (0, 1, 2, 3), t3[np.ix_(so,so,sO,sv,sv,sV)], (4, 5, 1, 6, 7, 3), (4, 5, 0, 6, 7, 2))
+    del x548
+    x549 = np.zeros((navir, nocc, nocc, nvir), dtype=np.float64)
+    x549 += einsum(t1[np.ix_(so,sv)], (0, 1), x155, (2, 3, 4, 0), (2, 3, 4, 1))
+    del x155
+    t3new += einsum(x549, (0, 1, 2, 3), t3[np.ix_(so,so,sO,sv,sV,sV)], (4, 2, 5, 6, 7, 0), (4, 1, 5, 6, 3, 7))
+    del x549
+    x550 = np.zeros((naocc, naocc, navir, nvir), dtype=np.float64)
+    x550 += einsum(t1[np.ix_(so,sv)], (0, 1), x544, (2, 3, 4, 0), (2, 3, 4, 1))
+    del x544
+    t3new += einsum(x550, (0, 1, 2, 3), t3[np.ix_(so,so,sO,sv,sV,sV)], (4, 5, 1, 6, 7, 2), (5, 4, 0, 3, 6, 7))
+    del x550
+    x551 = np.zeros((naocc, navir, navir, nvir), dtype=np.float64)
+    x551 += einsum(t1[np.ix_(so,sV)], (0, 1), v.ovOV, (0, 2, 3, 4), (3, 1, 4, 2))
+    x552 = np.zeros((naocc, navir, navir, nocc), dtype=np.float64)
+    x552 += einsum(t1[np.ix_(so,sv)], (0, 1), x551, (2, 3, 4, 1), (2, 3, 4, 0))
+    del x551
+    t3new += einsum(x552, (0, 1, 2, 3), t3[np.ix_(so,sO,sO,sv,sv,sV)], (4, 5, 0, 6, 7, 2), (3, 4, 5, 7, 6, 1))
+    del x552
+    x553 = np.zeros((naocc, navir, nocc, nvir), dtype=np.float64)
+    x553 += einsum(t1[np.ix_(so,sv)], (0, 1), x62, (2, 3, 4, 0), (2, 3, 4, 1))
+    del x62
+    t3new += einsum(x553, (0, 1, 2, 3), t3[np.ix_(so,sO,sO,sv,sV,sV)], (4, 5, 0, 6, 7, 1), (2, 4, 5, 3, 6, 7)) * -1.0
+    del x553
+    x554 = np.zeros((naocc, navir, nocc, nocc, nvir, nvir), dtype=np.float64)
+    x554 += einsum(t2[np.ix_(so,sO,sv,sV)], (0, 1, 2, 3), x97, (4, 5, 0, 6), (1, 3, 4, 5, 2, 6))
+    del x97
+    t3new += einsum(x554, (0, 1, 2, 3, 4, 5), (2, 3, 0, 4, 5, 1))
+    t3new += einsum(x554, (0, 1, 2, 3, 4, 5), (3, 2, 0, 5, 4, 1))
+    del x554
+    x555 = np.zeros((naocc, navir, nocc, nvir), dtype=np.float64)
+    x555 += einsum(t2[np.ix_(so,sO,sv,sV)], (0, 1, 2, 3), v.ovov, (4, 5, 0, 2), (1, 3, 4, 5))
+    x556 = np.zeros((naocc, navir, nocc, nocc), dtype=np.float64)
+    x556 += einsum(t1[np.ix_(so,sv)], (0, 1), x555, (2, 3, 4, 1), (2, 3, 0, 4))
+    x557 = np.zeros((naocc, navir, nocc, nocc, nvir, nvir), dtype=np.float64)
+    x557 += einsum(t2[np.ix_(so,so,sv,sv)], (0, 1, 2, 3), x556, (4, 5, 6, 1), (4, 5, 6, 0, 2, 3))
+    del x556
+    t3new += einsum(x557, (0, 1, 2, 3, 4, 5), (2, 3, 0, 5, 4, 1)) * -2.0
+    t3new += einsum(x557, (0, 1, 2, 3, 4, 5), (3, 2, 0, 4, 5, 1)) * -2.0
+    del x557
+    x558 = np.zeros((naocc, navir, nocc, nocc, nvir, nvir), dtype=np.float64)
+    x558 += einsum(t2[np.ix_(so,sO,sv,sV)], (0, 1, 2, 3), x99, (4, 5, 0, 6), (1, 3, 4, 5, 2, 6))
+    del x99
+    t3new += einsum(x558, (0, 1, 2, 3, 4, 5), (2, 3, 0, 5, 4, 1))
+    t3new += einsum(x558, (0, 1, 2, 3, 4, 5), (3, 2, 0, 4, 5, 1))
+    del x558
+    x559 = np.zeros((naocc, navir, nocc, nocc, nvir, nvir), dtype=np.float64)
+    x559 += einsum(t2[np.ix_(so,sO,sv,sV)], (0, 1, 2, 3), x93, (4, 5, 0, 6), (1, 3, 4, 5, 2, 6))
+    del x93
+    t3new += einsum(x559, (0, 1, 2, 3, 4, 5), (2, 3, 0, 4, 5, 1)) * -2.0
+    t3new += einsum(x559, (0, 1, 2, 3, 4, 5), (3, 2, 0, 5, 4, 1)) * -2.0
+    del x559
+    x560 = np.zeros((naocc, navir, nocc, nvir), dtype=np.float64)
+    x560 += einsum(t2[np.ix_(so,sO,sv,sV)], (0, 1, 2, 3), v.ovov, (4, 2, 0, 5), (1, 3, 4, 5))
+    x561 = np.zeros((naocc, navir, nocc, nocc), dtype=np.float64)
+    x561 += einsum(t1[np.ix_(so,sv)], (0, 1), x560, (2, 3, 4, 1), (2, 3, 0, 4))
+    x562 = np.zeros((naocc, navir, nocc, nocc, nvir, nvir), dtype=np.float64)
+    x562 += einsum(t2[np.ix_(so,so,sv,sv)], (0, 1, 2, 3), x561, (4, 5, 6, 1), (4, 5, 6, 0, 2, 3))
+    del x561
+    t3new += einsum(x562, (0, 1, 2, 3, 4, 5), (2, 3, 0, 5, 4, 1))
+    t3new += einsum(x562, (0, 1, 2, 3, 4, 5), (3, 2, 0, 4, 5, 1))
+    del x562
+    x563 = np.zeros((naocc, navir, nocc, nocc, nvir, nvir), dtype=np.float64)
+    x563 += einsum(t2[np.ix_(so,sO,sv,sV)], (0, 1, 2, 3), x95, (4, 5, 0, 6), (1, 3, 4, 5, 2, 6))
+    del x95
+    t3new += einsum(x563, (0, 1, 2, 3, 4, 5), (2, 3, 0, 4, 5, 1))
+    t3new += einsum(x563, (0, 1, 2, 3, 4, 5), (3, 2, 0, 5, 4, 1))
+    del x563
+    x564 = np.zeros((naocc, navir, nocc, nocc, nocc, nocc), dtype=np.float64)
+    x564 += einsum(t1[np.ix_(so,sv)], (0, 1), x157, (2, 3, 4, 5, 6, 1), (2, 3, 0, 4, 5, 6))
+    x565 = np.zeros((naocc, navir, nocc, nocc, nvir, nvir), dtype=np.float64)
+    x565 += einsum(t2[np.ix_(so,so,sv,sv)], (0, 1, 2, 3), x564, (4, 5, 6, 7, 0, 1), (4, 5, 6, 7, 2, 3))
+    t3new += einsum(x565, (0, 1, 2, 3, 4, 5), (2, 3, 0, 4, 5, 1))
+    t3new += einsum(x565, (0, 1, 2, 3, 4, 5), (3, 2, 0, 5, 4, 1))
+    del x565
+    x566 = np.zeros((naocc, nocc, nocc, nvir), dtype=np.float64)
+    x566 += einsum(t2[np.ix_(so,sO,sv,sv)], (0, 1, 2, 3), x9, (4, 5, 0, 3), (1, 4, 5, 2))
+    t3new += einsum(t2[np.ix_(so,so,sv,sV)], (0, 1, 2, 3), x566, (4, 5, 0, 6), (1, 5, 4, 2, 6, 3)) * -1.0
+    x567 = np.zeros((naocc, navir, nocc, nocc, nvir, nvir), dtype=np.float64)
+    x567 += einsum(t2[np.ix_(so,so,sv,sV)], (0, 1, 2, 3), x566, (4, 5, 1, 6), (4, 3, 5, 0, 6, 2))
+    del x566
+    t3new += einsum(x567, (0, 1, 2, 3, 4, 5), (2, 3, 0, 4, 5, 1))
+    t3new += einsum(x567, (0, 1, 2, 3, 4, 5), (3, 2, 0, 5, 4, 1))
+    del x567
+    x568 = np.zeros((naocc, nocc, nocc, nvir), dtype=np.float64)
+    x568 += einsum(t2[np.ix_(so,sO,sv,sv)], (0, 1, 2, 3), x9, (4, 5, 0, 2), (1, 4, 5, 3))
+    t3new += einsum(t2[np.ix_(so,so,sv,sV)], (0, 1, 2, 3), x568, (4, 5, 1, 6), (5, 0, 4, 6, 2, 3)) * -1.0
+    t3new += einsum(t2[np.ix_(so,so,sv,sV)], (0, 1, 2, 3), x568, (4, 5, 0, 6), (1, 5, 4, 6, 2, 3)) * -1.0
+    del x568
+    x569 = np.zeros((naocc, nocc, nocc, nvir), dtype=np.float64)
+    x569 += einsum(t2[np.ix_(so,sO,sv,sv)], (0, 1, 2, 3), x9, (4, 0, 5, 3), (1, 4, 5, 2))
+    t3new += einsum(t2[np.ix_(so,so,sv,sV)], (0, 1, 2, 3), x569, (4, 5, 1, 6), (5, 0, 4, 6, 2, 3)) * -1.0
+    t3new += einsum(t2[np.ix_(so,so,sv,sV)], (0, 1, 2, 3), x569, (4, 5, 0, 6), (1, 5, 4, 6, 2, 3)) * -1.0
+    del x569
+    x570 = np.zeros((naocc, nocc, nocc, nvir), dtype=np.float64)
+    x570 += einsum(t2[np.ix_(so,sO,sv,sv)], (0, 1, 2, 3), x9, (4, 0, 5, 2), (1, 4, 5, 3))
+    x571 = np.zeros((naocc, navir, nocc, nocc, nvir, nvir), dtype=np.float64)
+    x571 += einsum(t2[np.ix_(so,so,sv,sV)], (0, 1, 2, 3), x570, (4, 5, 1, 6), (4, 3, 5, 0, 6, 2))
+    t3new += einsum(x571, (0, 1, 2, 3, 4, 5), (2, 3, 0, 4, 5, 1))
+    t3new += einsum(x571, (0, 1, 2, 3, 4, 5), (2, 3, 0, 4, 5, 1))
+    del x571
+    x572 = np.zeros((navir, nocc, nocc, nvir), dtype=np.float64)
+    x572 += einsum(t2[np.ix_(so,so,sv,sV)], (0, 1, 2, 3), v.ovov, (4, 2, 1, 5), (3, 0, 4, 5))
+    x573 = np.zeros((navir, nocc, nocc, nocc), dtype=np.float64)
+    x573 += einsum(t1[np.ix_(so,sv)], (0, 1), x572, (2, 3, 4, 1), (2, 0, 3, 4))
+    t3new += einsum(t2[np.ix_(so,sO,sv,sv)], (0, 1, 2, 3), x573, (4, 5, 6, 0), (5, 6, 1, 3, 2, 4)) * -1.0
+    del x573
+    x574 = np.zeros((navir, nocc, nvir, nvir), dtype=np.float64)
+    x574 += einsum(t2[np.ix_(so,so,sv,sV)], (0, 1, 2, 3), x9, (4, 1, 0, 5), (3, 4, 2, 5))
+    t3new += einsum(t2[np.ix_(so,sO,sv,sv)], (0, 1, 2, 3), x574, (4, 5, 6, 2), (0, 5, 1, 3, 6, 4)) * -1.0
+    x575 = np.zeros((naocc, navir, nocc, nocc, nvir, nvir), dtype=np.float64)
+    x575 += einsum(t2[np.ix_(so,sO,sv,sv)], (0, 1, 2, 3), x574, (4, 5, 6, 3), (1, 4, 5, 0, 2, 6))
+    del x574
+    t3new += einsum(x575, (0, 1, 2, 3, 4, 5), (2, 3, 0, 5, 4, 1)) * 0.5
+    t3new += einsum(x575, (0, 1, 2, 3, 4, 5), (2, 3, 0, 5, 4, 1)) * 0.5
+    t3new += einsum(x575, (0, 1, 2, 3, 4, 5), (3, 2, 0, 4, 5, 1))
+    del x575
+    x576 = np.zeros((navir, nocc, nvir, nvir), dtype=np.float64)
+    x576 += einsum(t2[np.ix_(so,so,sv,sV)], (0, 1, 2, 3), x9, (4, 0, 1, 5), (3, 4, 2, 5))
+    del x9
+    t3new += einsum(t2[np.ix_(so,sO,sv,sv)], (0, 1, 2, 3), x576, (4, 5, 6, 2), (5, 0, 1, 3, 6, 4)) * -1.0
+    x577 = np.zeros((naocc, navir, nocc, nocc, nvir, nvir), dtype=np.float64)
+    x577 += einsum(t2[np.ix_(so,sO,sv,sv)], (0, 1, 2, 3), x576, (4, 5, 6, 3), (1, 4, 5, 0, 2, 6))
+    del x576
+    t3new += einsum(x577, (0, 1, 2, 3, 4, 5), (2, 3, 0, 5, 4, 1)) * -0.5
+    t3new += einsum(x577, (0, 1, 2, 3, 4, 5), (2, 3, 0, 5, 4, 1)) * -0.5
+    del x577
+    x578 = np.zeros((navir, nocc, nocc, nvir), dtype=np.float64)
+    x578 += einsum(t2[np.ix_(so,so,sv,sV)], (0, 1, 2, 3), v.ovov, (4, 5, 1, 2), (3, 0, 4, 5))
+    x579 = np.zeros((navir, nocc, nocc, nocc), dtype=np.float64)
+    x579 += einsum(t1[np.ix_(so,sv)], (0, 1), x578, (2, 3, 4, 1), (2, 0, 3, 4))
+    t3new += einsum(t2[np.ix_(so,sO,sv,sv)], (0, 1, 2, 3), x579, (4, 5, 6, 0), (6, 5, 1, 3, 2, 4)) * -1.0
+    del x579
+    x580 = np.zeros((naocc, navir, nocc, nocc, nvir, nvir), dtype=np.float64)
+    x580 += einsum(t2[np.ix_(so,so,sv,sV)], (0, 1, 2, 3), x570, (4, 5, 0, 6), (4, 3, 5, 1, 6, 2))
+    del x570
+    t3new += einsum(x580, (0, 1, 2, 3, 4, 5), (3, 2, 0, 4, 5, 1))
+    t3new += einsum(x580, (0, 1, 2, 3, 4, 5), (3, 2, 0, 4, 5, 1))
+    del x580
+    x581 = np.zeros((navir, nocc, nocc, nvir), dtype=np.float64)
+    x581 += einsum(t2[np.ix_(so,so,sv,sV)], (0, 1, 2, 3), v.ovov, (4, 2, 0, 5), (3, 1, 4, 5))
+    x582 = np.zeros((navir, nocc, nocc, nocc), dtype=np.float64)
+    x582 += einsum(t1[np.ix_(so,sv)], (0, 1), x581, (2, 3, 4, 1), (2, 0, 3, 4))
+    t3new += einsum(t2[np.ix_(so,sO,sv,sv)], (0, 1, 2, 3), x582, (4, 5, 6, 0), (6, 5, 1, 3, 2, 4)) * -1.0
+    del x582
+    x583 = np.zeros((navir, nocc, nocc, nvir), dtype=np.float64)
+    x583 += einsum(t2[np.ix_(so,so,sv,sV)], (0, 1, 2, 3), v.ovov, (4, 5, 0, 2), (3, 1, 4, 5))
+    x584 = np.zeros((navir, nocc, nocc, nocc), dtype=np.float64)
+    x584 += einsum(t1[np.ix_(so,sv)], (0, 1), x583, (2, 3, 4, 1), (2, 0, 3, 4))
+    t3new += einsum(t2[np.ix_(so,sO,sv,sv)], (0, 1, 2, 3), x584, (4, 5, 6, 0), (6, 5, 1, 3, 2, 4)) * 2.0
+    del x584
+    x585 = np.zeros((naocc, navir, nocc, nocc, nocc, nvir), dtype=np.float64)
+    x585 += einsum(t2[np.ix_(so,so,sv,sv)], (0, 1, 2, 3), x157, (4, 5, 6, 7, 1, 2), (4, 5, 6, 0, 7, 3))
+    x586 = np.zeros((naocc, navir, nocc, nocc, nvir, nvir), dtype=np.float64)
+    x586 += einsum(t1[np.ix_(so,sv)], (0, 1), x585, (2, 3, 4, 5, 0, 6), (2, 3, 4, 5, 1, 6))
+    del x585
+    t3new += einsum(x586, (0, 1, 2, 3, 4, 5), (3, 2, 0, 4, 5, 1))
+    t3new += einsum(x586, (0, 1, 2, 3, 4, 5), (2, 3, 0, 5, 4, 1))
+    del x586
+    x587 = np.zeros((naocc, navir, nocc, nocc, nocc, nvir), dtype=np.float64)
+    x587 += einsum(t2[np.ix_(so,sO,sv,sV)], (0, 1, 2, 3), x87, (4, 5, 0, 6), (1, 3, 5, 4, 6, 2))
+    x588 = np.zeros((naocc, navir, nocc, nocc, nvir, nvir), dtype=np.float64)
+    x588 += einsum(t1[np.ix_(so,sv)], (0, 1), x587, (2, 3, 4, 5, 0, 6), (2, 3, 4, 5, 1, 6))
+    del x587
+    t3new += einsum(x588, (0, 1, 2, 3, 4, 5), (2, 3, 0, 4, 5, 1))
+    t3new += einsum(x588, (0, 1, 2, 3, 4, 5), (3, 2, 0, 5, 4, 1))
+    del x588
+    x589 = np.zeros((naocc, navir, nocc, nocc, nocc, nvir), dtype=np.float64)
+    x589 += einsum(t2[np.ix_(so,so,sv,sv)], (0, 1, 2, 3), x555, (4, 5, 6, 3), (4, 5, 0, 1, 6, 2))
+    del x555
+    x590 = np.zeros((naocc, navir, nocc, nocc, nvir, nvir), dtype=np.float64)
+    x590 += einsum(t1[np.ix_(so,sv)], (0, 1), x589, (2, 3, 4, 5, 0, 6), (2, 3, 4, 5, 1, 6))
+    del x589
+    t3new += einsum(x590, (0, 1, 2, 3, 4, 5), (3, 2, 0, 4, 5, 1)) * -2.0
+    t3new += einsum(x590, (0, 1, 2, 3, 4, 5), (2, 3, 0, 5, 4, 1)) * -2.0
+    del x590
+    x591 = np.zeros((naocc, navir, nocc, nocc, nocc, nvir), dtype=np.float64)
+    x591 += einsum(t2[np.ix_(so,so,sv,sv)], (0, 1, 2, 3), x560, (4, 5, 6, 3), (4, 5, 0, 1, 6, 2))
+    del x560
+    x592 = np.zeros((naocc, navir, nocc, nocc, nvir, nvir), dtype=np.float64)
+    x592 += einsum(t1[np.ix_(so,sv)], (0, 1), x591, (2, 3, 4, 5, 0, 6), (2, 3, 4, 5, 1, 6))
+    del x591
+    t3new += einsum(x592, (0, 1, 2, 3, 4, 5), (3, 2, 0, 4, 5, 1))
+    t3new += einsum(x592, (0, 1, 2, 3, 4, 5), (2, 3, 0, 5, 4, 1))
+    del x592
+    x593 = np.zeros((naocc, navir, nocc, nocc, nocc, nvir), dtype=np.float64)
+    x593 += einsum(t2[np.ix_(so,so,sv,sv)], (0, 1, 2, 3), x157, (4, 5, 6, 7, 1, 3), (4, 5, 6, 0, 7, 2))
+    x594 = np.zeros((naocc, navir, nocc, nocc, nvir, nvir), dtype=np.float64)
+    x594 += einsum(t1[np.ix_(so,sv)], (0, 1), x593, (2, 3, 4, 5, 0, 6), (2, 3, 4, 5, 1, 6))
+    del x593
+    t3new += einsum(x594, (0, 1, 2, 3, 4, 5), (2, 3, 0, 4, 5, 1))
+    t3new += einsum(x594, (0, 1, 2, 3, 4, 5), (3, 2, 0, 5, 4, 1))
+    del x594
+    x595 = np.zeros((naocc, navir, nocc, nocc, nocc, nvir), dtype=np.float64)
+    x595 += einsum(t2[np.ix_(so,so,sv,sv)], (0, 1, 2, 3), x157, (4, 5, 6, 1, 7, 3), (4, 5, 6, 0, 7, 2))
+    x596 = np.zeros((naocc, navir, nocc, nocc, nvir, nvir), dtype=np.float64)
+    x596 += einsum(t1[np.ix_(so,sv)], (0, 1), x595, (2, 3, 4, 5, 0, 6), (2, 3, 4, 5, 1, 6))
+    del x595
+    t3new += einsum(x596, (0, 1, 2, 3, 4, 5), (2, 3, 0, 4, 5, 1)) * -2.0
+    t3new += einsum(x596, (0, 1, 2, 3, 4, 5), (3, 2, 0, 5, 4, 1)) * -2.0
+    del x596
+    x597 = np.zeros((naocc, navir, nocc, nocc, nocc, nvir), dtype=np.float64)
+    x597 += einsum(t2[np.ix_(so,so,sv,sv)], (0, 1, 2, 3), x157, (4, 5, 6, 1, 7, 2), (4, 5, 6, 0, 7, 3))
+    del x157
+    x598 = np.zeros((naocc, navir, nocc, nocc, nvir, nvir), dtype=np.float64)
+    x598 += einsum(t1[np.ix_(so,sv)], (0, 1), x597, (2, 3, 4, 5, 0, 6), (2, 3, 4, 5, 1, 6))
+    del x597
+    t3new += einsum(x598, (0, 1, 2, 3, 4, 5), (2, 3, 0, 4, 5, 1))
+    t3new += einsum(x598, (0, 1, 2, 3, 4, 5), (3, 2, 0, 5, 4, 1))
+    del x598
+    x599 = np.zeros((naocc, navir, nocc, nocc, nocc, nvir), dtype=np.float64)
+    x599 += einsum(t2[np.ix_(so,sO,sv,sv)], (0, 1, 2, 3), x572, (4, 5, 6, 3), (1, 4, 0, 5, 6, 2))
+    x600 = np.zeros((naocc, navir, nocc, nocc, nvir, nvir), dtype=np.float64)
+    x600 += einsum(t1[np.ix_(so,sv)], (0, 1), x599, (2, 3, 4, 5, 0, 6), (2, 3, 4, 5, 1, 6))
+    del x599
+    t3new += einsum(x600, (0, 1, 2, 3, 4, 5), (3, 2, 0, 4, 5, 1))
+    t3new += einsum(x600, (0, 1, 2, 3, 4, 5), (2, 3, 0, 5, 4, 1))
+    del x600
+    x601 = np.zeros((naocc, navir, nocc, nocc, nocc, nvir), dtype=np.float64)
+    x601 += einsum(t2[np.ix_(so,sO,sv,sv)], (0, 1, 2, 3), x578, (4, 5, 6, 3), (1, 4, 0, 5, 6, 2))
+    t3new += einsum(t1[np.ix_(so,sv)], (0, 1), x601, (2, 3, 4, 5, 0, 6), (5, 4, 2, 1, 6, 3)) * -1.0
+    del x601
+    x602 = np.zeros((naocc, nocc, nocc, nocc), dtype=np.float64)
+    x602 += einsum(t2[np.ix_(so,sO,sv,sv)], (0, 1, 2, 3), v.ovov, (4, 3, 5, 2), (1, 0, 4, 5))
+    x603 = np.zeros((naocc, nocc, nocc, nvir), dtype=np.float64)
+    x603 += einsum(t1[np.ix_(so,sv)], (0, 1), x602, (2, 3, 4, 0), (2, 3, 4, 1))
+    t3new += einsum(t2[np.ix_(so,so,sv,sV)], (0, 1, 2, 3), x603, (4, 5, 0, 6), (1, 5, 4, 2, 6, 3)) * -1.0
+    x604 = np.zeros((naocc, navir, nocc, nocc, nvir, nvir), dtype=np.float64)
+    x604 += einsum(t2[np.ix_(so,so,sv,sV)], (0, 1, 2, 3), x603, (4, 5, 1, 6), (4, 3, 5, 0, 6, 2))
+    del x603
+    t3new += einsum(x604, (0, 1, 2, 3, 4, 5), (2, 3, 0, 4, 5, 1))
+    t3new += einsum(x604, (0, 1, 2, 3, 4, 5), (3, 2, 0, 5, 4, 1))
+    del x604
+    x605 = np.zeros((naocc, nocc, nocc, nvir), dtype=np.float64)
+    x605 += einsum(t1[np.ix_(so,sv)], (0, 1), x602, (2, 3, 0, 4), (2, 3, 4, 1))
+    del x602
+    t3new += einsum(t2[np.ix_(so,so,sv,sV)], (0, 1, 2, 3), x605, (4, 5, 1, 6), (5, 0, 4, 6, 2, 3)) * -1.0
+    t3new += einsum(t2[np.ix_(so,so,sv,sV)], (0, 1, 2, 3), x605, (4, 5, 0, 6), (1, 5, 4, 6, 2, 3)) * -1.0
+    del x605
+    x606 = np.zeros((naocc, nocc, nvir, nvir), dtype=np.float64)
+    x606 += einsum(t2[np.ix_(so,sO,sv,sv)], (0, 1, 2, 3), v.ovov, (4, 3, 0, 5), (1, 4, 2, 5))
+    x607 = np.zeros((naocc, navir, nocc, nocc, nocc, nvir), dtype=np.float64)
+    x607 += einsum(t2[np.ix_(so,so,sv,sV)], (0, 1, 2, 3), x606, (4, 5, 6, 2), (4, 3, 1, 0, 5, 6))
+    del x606
+    t3new += einsum(t1[np.ix_(so,sv)], (0, 1), x607, (2, 3, 4, 5, 0, 6), (4, 5, 2, 1, 6, 3)) * -1.0
+    del x607
+    x608 = np.zeros((naocc, navir, nocc, nocc, nocc, nvir), dtype=np.float64)
+    x608 += einsum(t2[np.ix_(so,sO,sv,sv)], (0, 1, 2, 3), x581, (4, 5, 6, 3), (1, 4, 0, 5, 6, 2))
+    t3new += einsum(t1[np.ix_(so,sv)], (0, 1), x608, (2, 3, 4, 5, 0, 6), (5, 4, 2, 1, 6, 3)) * -1.0
+    del x608
+    x609 = np.zeros((naocc, navir, nocc, nocc, nocc, nvir), dtype=np.float64)
+    x609 += einsum(t2[np.ix_(so,sO,sv,sv)], (0, 1, 2, 3), x583, (4, 5, 6, 3), (1, 4, 0, 5, 6, 2))
+    t3new += einsum(t1[np.ix_(so,sv)], (0, 1), x609, (2, 3, 4, 5, 0, 6), (5, 4, 2, 1, 6, 3)) * 2.0
+    del x609
+    x610 = np.zeros((naocc, navir, nocc, nocc, nocc, nvir), dtype=np.float64)
+    x610 += einsum(t2[np.ix_(so,sO,sv,sv)], (0, 1, 2, 3), x578, (4, 5, 6, 2), (1, 4, 0, 5, 6, 3))
+    del x578
+    t3new += einsum(t1[np.ix_(so,sv)], (0, 1), x610, (2, 3, 4, 5, 0, 6), (5, 4, 2, 6, 1, 3)) * -1.0
+    del x610
+    x611 = np.zeros((naocc, navir, nocc, nocc, nocc, nvir), dtype=np.float64)
+    x611 += einsum(t2[np.ix_(so,sO,sv,sv)], (0, 1, 2, 3), x572, (4, 5, 6, 2), (1, 4, 0, 5, 6, 3))
+    del x572
+    t3new += einsum(t1[np.ix_(so,sv)], (0, 1), x611, (2, 3, 4, 5, 0, 6), (4, 5, 2, 6, 1, 3)) * -1.0
+    del x611
+    x612 = np.zeros((naocc, nocc, nvir, nvir), dtype=np.float64)
+    x612 += einsum(t2[np.ix_(so,sO,sv,sv)], (0, 1, 2, 3), v.ovov, (4, 5, 0, 2), (1, 4, 3, 5))
+    x613 = np.zeros((naocc, navir, nocc, nocc, nocc, nvir), dtype=np.float64)
+    x613 += einsum(t2[np.ix_(so,so,sv,sV)], (0, 1, 2, 3), x612, (4, 5, 6, 2), (4, 3, 1, 0, 5, 6))
+    del x612
+    x614 = np.zeros((naocc, navir, nocc, nocc, nvir, nvir), dtype=np.float64)
+    x614 += einsum(t1[np.ix_(so,sv)], (0, 1), x613, (2, 3, 4, 5, 0, 6), (2, 3, 4, 5, 1, 6))
+    del x613
+    t3new += einsum(x614, (0, 1, 2, 3, 4, 5), (2, 3, 0, 5, 4, 1))
+    t3new += einsum(x614, (0, 1, 2, 3, 4, 5), (2, 3, 0, 5, 4, 1))
+    del x614
+    x615 = np.zeros((naocc, nocc, nvir, nvir), dtype=np.float64)
+    x615 += einsum(t2[np.ix_(so,sO,sv,sv)], (0, 1, 2, 3), v.ovov, (4, 2, 0, 5), (1, 4, 3, 5))
+    x616 = np.zeros((naocc, navir, nocc, nocc, nocc, nvir), dtype=np.float64)
+    x616 += einsum(t2[np.ix_(so,so,sv,sV)], (0, 1, 2, 3), x615, (4, 5, 6, 2), (4, 3, 1, 0, 5, 6))
+    del x615
+    t3new += einsum(t1[np.ix_(so,sv)], (0, 1), x616, (2, 3, 4, 5, 0, 6), (4, 5, 2, 6, 1, 3)) * -1.0
+    del x616
+    x617 = np.zeros((naocc, nocc, nvir, nvir), dtype=np.float64)
+    x617 += einsum(t2[np.ix_(so,sO,sv,sv)], (0, 1, 2, 3), v.ovov, (4, 5, 0, 3), (1, 4, 2, 5))
+    x618 = np.zeros((naocc, navir, nocc, nocc, nocc, nvir), dtype=np.float64)
+    x618 += einsum(t2[np.ix_(so,so,sv,sV)], (0, 1, 2, 3), x617, (4, 5, 6, 2), (4, 3, 1, 0, 5, 6))
+    del x617
+    t3new += einsum(t1[np.ix_(so,sv)], (0, 1), x618, (2, 3, 4, 5, 0, 6), (4, 5, 2, 6, 1, 3)) * -1.0
+    del x618
+    x619 = np.zeros((naocc, navir, nocc, nocc, nocc, nvir), dtype=np.float64)
+    x619 += einsum(t2[np.ix_(so,sO,sv,sv)], (0, 1, 2, 3), x581, (4, 5, 6, 2), (1, 4, 0, 5, 6, 3))
+    del x581
+    t3new += einsum(t1[np.ix_(so,sv)], (0, 1), x619, (2, 3, 4, 5, 0, 6), (5, 4, 2, 6, 1, 3)) * -1.0
+    del x619
+    x620 = np.zeros((naocc, navir, nocc, nocc, nocc, nvir), dtype=np.float64)
+    x620 += einsum(t2[np.ix_(so,sO,sv,sv)], (0, 1, 2, 3), x583, (4, 5, 6, 2), (1, 4, 0, 5, 6, 3))
+    del x583
+    t3new += einsum(t1[np.ix_(so,sv)], (0, 1), x620, (2, 3, 4, 5, 0, 6), (5, 4, 2, 6, 1, 3)) * 2.0
+    del x620
+    x621 = np.zeros((naocc, navir, nocc, nocc), dtype=np.float64)
+    x621 += einsum(x0, (0, 1), t2[np.ix_(so,sO,sv,sV)], (2, 3, 1, 4), (3, 4, 2, 0))
+    x622 = np.zeros((naocc, navir, nocc, nocc, nvir, nvir), dtype=np.float64)
+    x622 += einsum(t2[np.ix_(so,so,sv,sv)], (0, 1, 2, 3), x621, (4, 5, 6, 1), (4, 5, 6, 0, 2, 3))
+    del x621
+    t3new += einsum(x622, (0, 1, 2, 3, 4, 5), (3, 2, 0, 4, 5, 1)) * -2.0
+    t3new += einsum(x622, (0, 1, 2, 3, 4, 5), (2, 3, 0, 5, 4, 1)) * -2.0
+    del x622
+    x623 = np.zeros((naocc, navir, nocc, nocc), dtype=np.float64)
+    x623 += einsum(x15, (0, 1), t2[np.ix_(so,sO,sv,sV)], (2, 3, 1, 4), (3, 4, 2, 0))
+    x624 = np.zeros((naocc, navir, nocc, nocc, nvir, nvir), dtype=np.float64)
+    x624 += einsum(t2[np.ix_(so,so,sv,sv)], (0, 1, 2, 3), x623, (4, 5, 6, 1), (4, 5, 6, 0, 2, 3))
+    del x623
+    t3new += einsum(x624, (0, 1, 2, 3, 4, 5), (3, 2, 0, 4, 5, 1))
+    t3new += einsum(x624, (0, 1, 2, 3, 4, 5), (2, 3, 0, 5, 4, 1))
+    del x624
+    x625 = np.zeros((naocc, navir, nocc, nocc, nvir, nvir), dtype=np.float64)
+    x625 += einsum(t2[np.ix_(so,sO,sv,sV)], (0, 1, 2, 3), x104, (4, 5, 0, 6), (1, 3, 4, 5, 2, 6))
+    del x104
+    t3new += einsum(x625, (0, 1, 2, 3, 4, 5), (2, 3, 0, 5, 4, 1)) * -2.0
+    t3new += einsum(x625, (0, 1, 2, 3, 4, 5), (3, 2, 0, 4, 5, 1)) * -2.0
+    del x625
+    x626 = np.zeros((naocc, navir, nocc, nocc, nvir, nvir), dtype=np.float64)
+    x626 += einsum(t2[np.ix_(so,sO,sv,sV)], (0, 1, 2, 3), x106, (4, 5, 0, 6), (1, 3, 4, 5, 2, 6))
+    del x106
+    t3new += einsum(x626, (0, 1, 2, 3, 4, 5), (2, 3, 0, 5, 4, 1))
+    t3new += einsum(x626, (0, 1, 2, 3, 4, 5), (3, 2, 0, 4, 5, 1))
+    del x626
+    x627 = np.zeros((naocc, nocc, nocc, nvir), dtype=np.float64)
+    x627 += einsum(x0, (0, 1), t2[np.ix_(so,sO,sv,sv)], (2, 3, 4, 1), (3, 2, 0, 4))
+    t3new += einsum(t2[np.ix_(so,so,sv,sV)], (0, 1, 2, 3), x627, (4, 5, 0, 6), (1, 5, 4, 2, 6, 3)) * 2.0
+    x628 = np.zeros((naocc, navir, nocc, nocc, nvir, nvir), dtype=np.float64)
+    x628 += einsum(t2[np.ix_(so,so,sv,sV)], (0, 1, 2, 3), x627, (4, 5, 1, 6), (4, 3, 5, 0, 6, 2))
+    del x627
+    t3new += einsum(x628, (0, 1, 2, 3, 4, 5), (3, 2, 0, 5, 4, 1)) * -2.0
+    t3new += einsum(x628, (0, 1, 2, 3, 4, 5), (2, 3, 0, 4, 5, 1)) * -2.0
+    del x628
+    x629 = np.zeros((naocc, nocc, nocc, nvir), dtype=np.float64)
+    x629 += einsum(x15, (0, 1), t2[np.ix_(so,sO,sv,sv)], (2, 3, 4, 1), (3, 2, 0, 4))
+    t3new += einsum(t2[np.ix_(so,so,sv,sV)], (0, 1, 2, 3), x629, (4, 5, 0, 6), (1, 5, 4, 2, 6, 3)) * -1.0
+    x630 = np.zeros((naocc, navir, nocc, nocc, nvir, nvir), dtype=np.float64)
+    x630 += einsum(t2[np.ix_(so,so,sv,sV)], (0, 1, 2, 3), x629, (4, 5, 1, 6), (4, 3, 5, 0, 6, 2))
+    del x629
+    t3new += einsum(x630, (0, 1, 2, 3, 4, 5), (3, 2, 0, 5, 4, 1))
+    t3new += einsum(x630, (0, 1, 2, 3, 4, 5), (2, 3, 0, 4, 5, 1))
+    del x630
+    x631 = np.zeros((naocc, nocc, nocc, nvir), dtype=np.float64)
+    x631 += einsum(x0, (0, 1), t2[np.ix_(so,sO,sv,sv)], (2, 3, 1, 4), (3, 2, 0, 4))
+    t3new += einsum(t2[np.ix_(so,so,sv,sV)], (0, 1, 2, 3), x631, (4, 5, 1, 6), (5, 0, 4, 6, 2, 3)) * 2.0
+    t3new += einsum(t2[np.ix_(so,so,sv,sV)], (0, 1, 2, 3), x631, (4, 5, 0, 6), (1, 5, 4, 6, 2, 3)) * 2.0
+    del x631
+    x632 = np.zeros((naocc, nocc, nocc, nvir), dtype=np.float64)
+    x632 += einsum(x15, (0, 1), t2[np.ix_(so,sO,sv,sv)], (2, 3, 1, 4), (3, 2, 0, 4))
+    t3new += einsum(t2[np.ix_(so,so,sv,sV)], (0, 1, 2, 3), x632, (4, 5, 1, 6), (5, 0, 4, 6, 2, 3)) * -1.0
+    t3new += einsum(t2[np.ix_(so,so,sv,sV)], (0, 1, 2, 3), x632, (4, 5, 0, 6), (1, 5, 4, 6, 2, 3)) * -1.0
+    del x632
+    x633 = np.zeros((navir, nocc, nocc, nocc), dtype=np.float64)
+    x633 += einsum(x0, (0, 1), t2[np.ix_(so,so,sv,sV)], (2, 3, 1, 4), (4, 3, 2, 0))
+    t3new += einsum(t2[np.ix_(so,sO,sv,sv)], (0, 1, 2, 3), x633, (4, 5, 6, 0), (5, 6, 1, 3, 2, 4)) * 2.0
+    del x633
+    x634 = np.zeros((navir, nocc, nocc, nocc), dtype=np.float64)
+    x634 += einsum(x15, (0, 1), t2[np.ix_(so,so,sv,sV)], (2, 3, 1, 4), (4, 3, 2, 0))
+    t3new += einsum(t2[np.ix_(so,sO,sv,sv)], (0, 1, 2, 3), x634, (4, 5, 6, 0), (5, 6, 1, 3, 2, 4)) * -1.0
+    del x634
+    x635 = np.zeros((navir, nocc, nvir, nvir), dtype=np.float64)
+    x635 += einsum(t2[np.ix_(so,so,sv,sv)], (0, 1, 2, 3), x168, (4, 1, 5, 3), (4, 0, 2, 5))
+    t3new += einsum(t2[np.ix_(so,sO,sv,sv)], (0, 1, 2, 3), x635, (4, 5, 6, 2), (0, 5, 1, 3, 6, 4)) * -1.0
+    x636 = np.zeros((naocc, navir, nocc, nocc, nvir, nvir), dtype=np.float64)
+    x636 += einsum(t2[np.ix_(so,sO,sv,sv)], (0, 1, 2, 3), x635, (4, 5, 6, 3), (1, 4, 0, 5, 2, 6))
+    del x635
+    t3new += einsum(x636, (0, 1, 2, 3, 4, 5), (3, 2, 0, 5, 4, 1))
+    t3new += einsum(x636, (0, 1, 2, 3, 4, 5), (2, 3, 0, 4, 5, 1))
+    del x636
+    x637 = np.zeros((naocc, navir, nocc, nocc), dtype=np.float64)
+    x637 += einsum(t2[np.ix_(so,sO,sv,sv)], (0, 1, 2, 3), x168, (4, 5, 2, 3), (1, 4, 0, 5))
+    x638 = np.zeros((naocc, navir, nocc, nocc, nvir, nvir), dtype=np.float64)
+    x638 += einsum(t2[np.ix_(so,so,sv,sv)], (0, 1, 2, 3), x637, (4, 5, 6, 1), (4, 5, 6, 0, 2, 3))
+    del x637
+    t3new += einsum(x638, (0, 1, 2, 3, 4, 5), (3, 2, 0, 4, 5, 1))
+    t3new += einsum(x638, (0, 1, 2, 3, 4, 5), (2, 3, 0, 5, 4, 1))
+    del x638
+    x639 = np.zeros((navir, nocc, nvir, nvir), dtype=np.float64)
+    x639 += einsum(t2[np.ix_(so,so,sv,sv)], (0, 1, 2, 3), x168, (4, 1, 5, 2), (4, 0, 3, 5))
+    t3new += einsum(t2[np.ix_(so,sO,sv,sv)], (0, 1, 2, 3), x639, (4, 5, 6, 3), (5, 0, 1, 6, 2, 4)) * -1.0
+    t3new += einsum(t2[np.ix_(so,sO,sv,sv)], (0, 1, 2, 3), x639, (4, 5, 6, 2), (5, 0, 1, 3, 6, 4)) * -1.0
+    del x639
+    x640 = np.zeros((navir, nocc, nvir, nvir), dtype=np.float64)
+    x640 += einsum(t2[np.ix_(so,so,sv,sv)], (0, 1, 2, 3), x168, (4, 1, 3, 5), (4, 0, 2, 5))
+    t3new += einsum(t2[np.ix_(so,sO,sv,sv)], (0, 1, 2, 3), x640, (4, 5, 6, 2), (0, 5, 1, 3, 6, 4)) * 2.0
+    x641 = np.zeros((naocc, navir, nocc, nocc, nvir, nvir), dtype=np.float64)
+    x641 += einsum(t2[np.ix_(so,sO,sv,sv)], (0, 1, 2, 3), x640, (4, 5, 6, 3), (1, 4, 0, 5, 2, 6))
+    del x640
+    t3new += einsum(x641, (0, 1, 2, 3, 4, 5), (3, 2, 0, 5, 4, 1)) * -2.0
+    t3new += einsum(x641, (0, 1, 2, 3, 4, 5), (2, 3, 0, 4, 5, 1)) * -2.0
+    del x641
+    x642 = np.zeros((navir, nocc, nvir, nvir), dtype=np.float64)
+    x642 += einsum(t2[np.ix_(so,so,sv,sv)], (0, 1, 2, 3), x168, (4, 1, 2, 5), (4, 0, 3, 5))
+    t3new += einsum(t2[np.ix_(so,sO,sv,sv)], (0, 1, 2, 3), x642, (4, 5, 6, 2), (0, 5, 1, 3, 6, 4)) * -1.0
+    x643 = np.zeros((naocc, navir, nocc, nocc, nvir, nvir), dtype=np.float64)
+    x643 += einsum(t2[np.ix_(so,sO,sv,sv)], (0, 1, 2, 3), x642, (4, 5, 6, 3), (1, 4, 0, 5, 2, 6))
+    del x642
+    t3new += einsum(x643, (0, 1, 2, 3, 4, 5), (3, 2, 0, 5, 4, 1))
+    t3new += einsum(x643, (0, 1, 2, 3, 4, 5), (2, 3, 0, 4, 5, 1))
+    del x643
+    x644 = np.zeros((naocc, navir, nvir, nvir), dtype=np.float64)
+    x644 += einsum(t2[np.ix_(so,sO,sv,sv)], (0, 1, 2, 3), x168, (4, 0, 3, 5), (1, 4, 2, 5))
+    t3new += einsum(t2[np.ix_(so,so,sv,sv)], (0, 1, 2, 3), x644, (4, 5, 6, 2), (0, 1, 4, 6, 3, 5)) * -1.0
+    del x644
+    x645 = np.zeros((navir, nocc, nocc, nocc), dtype=np.float64)
+    x645 += einsum(t2[np.ix_(so,so,sv,sv)], (0, 1, 2, 3), x168, (4, 5, 2, 3), (4, 0, 1, 5))
+    t3new += einsum(t2[np.ix_(so,sO,sv,sv)], (0, 1, 2, 3), x645, (4, 5, 6, 0), (6, 5, 1, 3, 2, 4)) * -1.0
+    del x645
+    x646 = np.zeros((naocc, navir, nvir, nvir), dtype=np.float64)
+    x646 += einsum(t2[np.ix_(so,sO,sv,sv)], (0, 1, 2, 3), x168, (4, 0, 2, 5), (1, 4, 3, 5))
+    t3new += einsum(t2[np.ix_(so,so,sv,sv)], (0, 1, 2, 3), x646, (4, 5, 6, 2), (0, 1, 4, 6, 3, 5)) * 2.0
+    del x646
+    x647 = np.zeros((naocc, navir, nvir, nvir), dtype=np.float64)
+    x647 += einsum(t2[np.ix_(so,sO,sv,sv)], (0, 1, 2, 3), x168, (4, 0, 5, 3), (1, 4, 2, 5))
+    x648 = np.zeros((naocc, navir, nocc, nocc, nvir, nvir), dtype=np.float64)
+    x648 += einsum(t2[np.ix_(so,so,sv,sv)], (0, 1, 2, 3), x647, (4, 5, 6, 3), (4, 5, 0, 1, 6, 2))
+    del x647
+    t3new += einsum(x648, (0, 1, 2, 3, 4, 5), (2, 3, 0, 5, 4, 1))
+    t3new += einsum(x648, (0, 1, 2, 3, 4, 5), (3, 2, 0, 4, 5, 1))
+    del x648
+    x649 = np.zeros((naocc, navir, nvir, nvir), dtype=np.float64)
+    x649 += einsum(t2[np.ix_(so,sO,sv,sv)], (0, 1, 2, 3), x168, (4, 0, 5, 2), (1, 4, 3, 5))
+    t3new += einsum(t2[np.ix_(so,so,sv,sv)], (0, 1, 2, 3), x649, (4, 5, 6, 2), (0, 1, 4, 6, 3, 5)) * -1.0
+    del x649
+    x650 = np.zeros((naocc, navir, nocc, nocc), dtype=np.float64)
+    x650 += einsum(t2[np.ix_(so,sO,sv,sv)], (0, 1, 2, 3), x168, (4, 5, 3, 2), (1, 4, 0, 5))
+    t3new += einsum(t2[np.ix_(so,so,sv,sv)], (0, 1, 2, 3), x650, (4, 5, 6, 1), (6, 0, 4, 3, 2, 5)) * -1.0
+    del x650
+    x651 = np.zeros((naocc, nocc, nocc, nvir), dtype=np.float64)
+    x651 += einsum(t2[np.ix_(so,so,sv,sv)], (0, 1, 2, 3), x179, (4, 5, 1, 3), (4, 0, 5, 2))
+    t3new += einsum(t2[np.ix_(so,so,sv,sV)], (0, 1, 2, 3), x651, (4, 5, 0, 6), (1, 5, 4, 2, 6, 3)) * -1.0
+    x652 = np.zeros((naocc, navir, nocc, nocc, nvir, nvir), dtype=np.float64)
+    x652 += einsum(t2[np.ix_(so,so,sv,sV)], (0, 1, 2, 3), x651, (4, 5, 1, 6), (4, 3, 0, 5, 2, 6))
+    del x651
+    t3new += einsum(x652, (0, 1, 2, 3, 4, 5), (3, 2, 0, 5, 4, 1))
+    t3new += einsum(x652, (0, 1, 2, 3, 4, 5), (2, 3, 0, 4, 5, 1))
+    del x652
+    x653 = np.zeros((naocc, nocc, nocc, nvir), dtype=np.float64)
+    x653 += einsum(t2[np.ix_(so,so,sv,sv)], (0, 1, 2, 3), x179, (4, 5, 1, 2), (4, 0, 5, 3))
+    t3new += einsum(t2[np.ix_(so,so,sv,sV)], (0, 1, 2, 3), x653, (4, 5, 1, 6), (5, 0, 4, 6, 2, 3)) * -1.0
+    t3new += einsum(t2[np.ix_(so,so,sv,sV)], (0, 1, 2, 3), x653, (4, 5, 0, 6), (1, 5, 4, 6, 2, 3)) * -1.0
+    del x653
+    x654 = np.zeros((naocc, nocc, nocc, nvir), dtype=np.float64)
+    x654 += einsum(t2[np.ix_(so,so,sv,sv)], (0, 1, 2, 3), x179, (4, 1, 5, 3), (4, 0, 5, 2))
+    t3new += einsum(t2[np.ix_(so,so,sv,sV)], (0, 1, 2, 3), x654, (4, 5, 0, 6), (1, 5, 4, 2, 6, 3)) * 2.0
+    x655 = np.zeros((naocc, navir, nocc, nocc, nvir, nvir), dtype=np.float64)
+    x655 += einsum(t2[np.ix_(so,so,sv,sV)], (0, 1, 2, 3), x654, (4, 5, 1, 6), (4, 3, 0, 5, 2, 6))
+    del x654
+    t3new += einsum(x655, (0, 1, 2, 3, 4, 5), (3, 2, 0, 5, 4, 1)) * -2.0
+    t3new += einsum(x655, (0, 1, 2, 3, 4, 5), (2, 3, 0, 4, 5, 1)) * -2.0
+    del x655
+    x656 = np.zeros((naocc, navir, nocc, nocc), dtype=np.float64)
+    x656 += einsum(t2[np.ix_(so,so,sv,sV)], (0, 1, 2, 3), x179, (4, 5, 1, 2), (4, 3, 0, 5))
+    x657 = np.zeros((naocc, navir, nocc, nocc, nvir, nvir), dtype=np.float64)
+    x657 += einsum(t2[np.ix_(so,so,sv,sv)], (0, 1, 2, 3), x656, (4, 5, 6, 1), (4, 5, 6, 0, 2, 3))
+    del x656
+    t3new += einsum(x657, (0, 1, 2, 3, 4, 5), (3, 2, 0, 4, 5, 1))
+    t3new += einsum(x657, (0, 1, 2, 3, 4, 5), (2, 3, 0, 5, 4, 1))
+    del x657
+    x658 = np.zeros((naocc, nocc, nocc, nvir), dtype=np.float64)
+    x658 += einsum(t2[np.ix_(so,so,sv,sv)], (0, 1, 2, 3), x179, (4, 1, 5, 2), (4, 0, 5, 3))
+    t3new += einsum(t2[np.ix_(so,so,sv,sV)], (0, 1, 2, 3), x658, (4, 5, 0, 6), (1, 5, 4, 2, 6, 3)) * -1.0
+    x659 = np.zeros((naocc, navir, nocc, nocc, nvir, nvir), dtype=np.float64)
+    x659 += einsum(t2[np.ix_(so,so,sv,sV)], (0, 1, 2, 3), x658, (4, 5, 1, 6), (4, 3, 0, 5, 2, 6))
+    del x658
+    t3new += einsum(x659, (0, 1, 2, 3, 4, 5), (3, 2, 0, 5, 4, 1))
+    t3new += einsum(x659, (0, 1, 2, 3, 4, 5), (2, 3, 0, 4, 5, 1))
+    del x659
+    x660 = np.zeros((naocc, navir, nvir, nvir), dtype=np.float64)
+    x660 += einsum(t2[np.ix_(so,so,sv,sV)], (0, 1, 2, 3), x179, (4, 1, 0, 5), (4, 3, 2, 5))
+    x661 = np.zeros((naocc, navir, nocc, nocc, nvir, nvir), dtype=np.float64)
+    x661 += einsum(t2[np.ix_(so,so,sv,sv)], (0, 1, 2, 3), x660, (4, 5, 6, 3), (4, 5, 0, 1, 6, 2))
+    del x660
+    t3new += einsum(x661, (0, 1, 2, 3, 4, 5), (3, 2, 0, 4, 5, 1)) * -0.5
+    t3new += einsum(x661, (0, 1, 2, 3, 4, 5), (3, 2, 0, 4, 5, 1)) * -0.5
+    del x661
+    x662 = np.zeros((naocc, navir, nvir, nvir), dtype=np.float64)
+    x662 += einsum(t2[np.ix_(so,so,sv,sV)], (0, 1, 2, 3), x179, (4, 0, 1, 5), (4, 3, 2, 5))
+    x663 = np.zeros((naocc, navir, nocc, nocc, nvir, nvir), dtype=np.float64)
+    x663 += einsum(t2[np.ix_(so,so,sv,sv)], (0, 1, 2, 3), x662, (4, 5, 6, 3), (4, 5, 0, 1, 6, 2))
+    del x662
+    t3new += einsum(x663, (0, 1, 2, 3, 4, 5), (3, 2, 0, 4, 5, 1)) * 0.5
+    t3new += einsum(x663, (0, 1, 2, 3, 4, 5), (2, 3, 0, 5, 4, 1))
+    t3new += einsum(x663, (0, 1, 2, 3, 4, 5), (3, 2, 0, 4, 5, 1)) * 0.5
+    del x663
+    x664 = np.zeros((naocc, navir, nocc, nocc), dtype=np.float64)
+    x664 += einsum(t2[np.ix_(so,so,sv,sV)], (0, 1, 2, 3), x179, (4, 1, 5, 2), (4, 3, 0, 5))
+    t3new += einsum(t2[np.ix_(so,so,sv,sv)], (0, 1, 2, 3), x664, (4, 5, 6, 1), (6, 0, 4, 3, 2, 5)) * -1.0
+    del x664
+    x665 = np.zeros((naocc, navir, nocc, nocc), dtype=np.float64)
+    x665 += einsum(t2[np.ix_(so,so,sv,sV)], (0, 1, 2, 3), x179, (4, 0, 5, 2), (4, 3, 1, 5))
+    t3new += einsum(t2[np.ix_(so,so,sv,sv)], (0, 1, 2, 3), x665, (4, 5, 6, 1), (6, 0, 4, 3, 2, 5)) * 2.0
+    del x665
+    x666 = np.zeros((naocc, navir, nocc, nocc), dtype=np.float64)
+    x666 += einsum(t2[np.ix_(so,so,sv,sV)], (0, 1, 2, 3), x179, (4, 5, 0, 2), (4, 3, 1, 5))
+    t3new += einsum(t2[np.ix_(so,so,sv,sv)], (0, 1, 2, 3), x666, (4, 5, 6, 1), (6, 0, 4, 3, 2, 5)) * -1.0
+    del x666
+    x667 = np.zeros((naocc, nvir, nvir, nvir), dtype=np.float64)
+    x667 += einsum(t2[np.ix_(so,so,sv,sv)], (0, 1, 2, 3), x179, (4, 0, 1, 5), (4, 2, 3, 5))
+    t3new += einsum(t2[np.ix_(so,so,sv,sV)], (0, 1, 2, 3), x667, (4, 5, 6, 2), (1, 0, 4, 6, 5, 3)) * -1.0
+    del x667
+    x668 = np.zeros((naocc, navir, nocc, nvir), dtype=np.float64)
+    x668 += einsum(t2[np.ix_(so,sO,sV,sv)], (0, 1, 2, 3), v.ovov, (4, 5, 0, 3), (1, 2, 4, 5))
+    x669 = np.zeros((naocc, navir, nocc, nocc), dtype=np.float64)
+    x669 += einsum(t1[np.ix_(so,sv)], (0, 1), x668, (2, 3, 4, 1), (2, 3, 0, 4))
+    x670 = np.zeros((naocc, navir, nocc, nocc, nvir, nvir), dtype=np.float64)
+    x670 += einsum(t2[np.ix_(so,so,sv,sv)], (0, 1, 2, 3), x669, (4, 5, 6, 1), (4, 5, 6, 0, 2, 3))
+    del x669
+    t3new += einsum(x670, (0, 1, 2, 3, 4, 5), (2, 3, 0, 5, 4, 1))
+    t3new += einsum(x670, (0, 1, 2, 3, 4, 5), (3, 2, 0, 4, 5, 1))
+    del x670
+    x671 = np.zeros((naocc, navir, nocc, nvir), dtype=np.float64)
+    x671 += einsum(t2[np.ix_(so,sO,sV,sv)], (0, 1, 2, 3), v.ovov, (4, 3, 0, 5), (1, 2, 4, 5))
+    x672 = np.zeros((naocc, navir, nocc, nocc), dtype=np.float64)
+    x672 += einsum(t1[np.ix_(so,sv)], (0, 1), x671, (2, 3, 4, 1), (2, 3, 0, 4))
+    t3new += einsum(t2[np.ix_(so,so,sv,sv)], (0, 1, 2, 3), x672, (4, 5, 6, 1), (6, 0, 4, 3, 2, 5)) * -1.0
+    del x672
+    x673 = np.zeros((naocc, navir, nocc, nocc, nocc, nocc), dtype=np.float64)
+    x673 += einsum(t1[np.ix_(so,sv)], (0, 1), x187, (2, 3, 4, 5, 6, 1), (2, 3, 0, 4, 5, 6))
+    t3new += einsum(t2[np.ix_(so,so,sv,sv)], (0, 1, 2, 3), x673, (4, 5, 6, 7, 0, 1), (7, 6, 4, 3, 2, 5)) * -1.0
+    x674 = np.zeros((naocc, navir, nocc, nocc, nocc, nvir), dtype=np.float64)
+    x674 += einsum(t2[np.ix_(so,so,sv,sv)], (0, 1, 2, 3), x668, (4, 5, 6, 3), (4, 5, 0, 1, 6, 2))
+    del x668
+    x675 = np.zeros((naocc, navir, nocc, nocc, nvir, nvir), dtype=np.float64)
+    x675 += einsum(t1[np.ix_(so,sv)], (0, 1), x674, (2, 3, 4, 5, 0, 6), (2, 3, 4, 5, 1, 6))
+    del x674
+    t3new += einsum(x675, (0, 1, 2, 3, 4, 5), (3, 2, 0, 4, 5, 1))
+    t3new += einsum(x675, (0, 1, 2, 3, 4, 5), (2, 3, 0, 5, 4, 1))
+    del x675
+    x676 = np.zeros((naocc, navir, nocc, nocc, nocc, nvir), dtype=np.float64)
+    x676 += einsum(t2[np.ix_(so,so,sv,sv)], (0, 1, 2, 3), x671, (4, 5, 6, 3), (4, 5, 0, 1, 6, 2))
+    del x671
+    t3new += einsum(t1[np.ix_(so,sv)], (0, 1), x676, (2, 3, 4, 5, 0, 6), (5, 4, 2, 1, 6, 3)) * -1.0
+    del x676
+    x677 = np.zeros((naocc, navir, nocc, nocc, nocc, nvir), dtype=np.float64)
+    x677 += einsum(t2[np.ix_(so,so,sv,sv)], (0, 1, 2, 3), x187, (4, 5, 6, 7, 1, 3), (4, 5, 6, 0, 7, 2))
+    t3new += einsum(t1[np.ix_(so,sv)], (0, 1), x677, (2, 3, 4, 5, 0, 6), (4, 5, 2, 1, 6, 3)) * -1.0
+    del x677
+    x678 = np.zeros((naocc, navir, nocc, nocc, nocc, nvir), dtype=np.float64)
+    x678 += einsum(t2[np.ix_(so,so,sv,sv)], (0, 1, 2, 3), x187, (4, 5, 6, 1, 7, 3), (4, 5, 6, 0, 7, 2))
+    t3new += einsum(t1[np.ix_(so,sv)], (0, 1), x678, (2, 3, 4, 5, 0, 6), (4, 5, 2, 1, 6, 3)) * 2.0
+    del x678
+    x679 = np.zeros((naocc, navir, nocc, nocc, nocc, nvir), dtype=np.float64)
+    x679 += einsum(t2[np.ix_(so,so,sv,sv)], (0, 1, 2, 3), x187, (4, 5, 6, 1, 7, 2), (4, 5, 6, 0, 7, 3))
+    t3new += einsum(t1[np.ix_(so,sv)], (0, 1), x679, (2, 3, 4, 5, 0, 6), (4, 5, 2, 1, 6, 3)) * -1.0
+    del x679
+    x680 = np.zeros((naocc, navir, nocc, nocc, nocc, nvir), dtype=np.float64)
+    x680 += einsum(t2[np.ix_(so,sO,sV,sv)], (0, 1, 2, 3), x87, (4, 5, 0, 6), (1, 2, 5, 4, 6, 3))
+    del x87
+    t3new += einsum(t1[np.ix_(so,sv)], (0, 1), x680, (2, 3, 4, 5, 0, 6), (5, 4, 2, 6, 1, 3)) * -1.0
+    del x680
+    x681 = np.zeros((naocc, navir, nocc, nocc, nocc, nvir), dtype=np.float64)
+    x681 += einsum(t2[np.ix_(so,so,sv,sv)], (0, 1, 2, 3), x187, (4, 5, 6, 7, 1, 2), (4, 5, 6, 0, 7, 3))
+    del x187
+    t3new += einsum(t1[np.ix_(so,sv)], (0, 1), x681, (2, 3, 4, 5, 0, 6), (4, 5, 2, 6, 1, 3)) * -1.0
+    del x681
+    x682 = np.zeros((naocc, navir, nocc, nocc), dtype=np.float64)
+    x682 += einsum(x0, (0, 1), t2[np.ix_(so,sO,sV,sv)], (2, 3, 4, 1), (3, 4, 2, 0))
+    del x0
+    t3new += einsum(t2[np.ix_(so,so,sv,sv)], (0, 1, 2, 3), x682, (4, 5, 6, 1), (6, 0, 4, 3, 2, 5)) * 2.0
+    del x682
+    x683 = np.zeros((naocc, navir, nocc, nocc), dtype=np.float64)
+    x683 += einsum(x15, (0, 1), t2[np.ix_(so,sO,sV,sv)], (2, 3, 4, 1), (3, 4, 2, 0))
+    del x15
+    t3new += einsum(t2[np.ix_(so,so,sv,sv)], (0, 1, 2, 3), x683, (4, 5, 6, 1), (6, 0, 4, 3, 2, 5)) * -1.0
+    del x683
+    x684 = np.zeros((naocc, navir, nocc, nocc, nocc, nvir), dtype=np.float64)
+    x684 += einsum(t2[np.ix_(so,sO,sv,sV)], (0, 1, 2, 3), x92, (4, 5, 0, 6), (1, 3, 5, 4, 6, 2))
+    x685 = np.zeros((naocc, navir, nocc, nocc, nvir, nvir), dtype=np.float64)
+    x685 += einsum(t1[np.ix_(so,sv)], (0, 1), x684, (2, 3, 4, 5, 0, 6), (2, 3, 4, 5, 1, 6))
+    del x684
+    t3new += einsum(x685, (0, 1, 2, 3, 4, 5), (2, 3, 0, 4, 5, 1))
+    t3new += einsum(x685, (0, 1, 2, 3, 4, 5), (3, 2, 0, 5, 4, 1))
+    del x685
+    x686 = np.zeros((naocc, navir, nocc, nocc, nocc, nvir), dtype=np.float64)
+    x686 += einsum(t1[np.ix_(so,sv)], (0, 1), x564, (2, 3, 4, 5, 6, 0), (2, 3, 4, 5, 6, 1))
+    del x564
+    x687 = np.zeros((naocc, navir, nocc, nocc, nvir, nvir), dtype=np.float64)
+    x687 += einsum(t1[np.ix_(so,sv)], (0, 1), x686, (2, 3, 4, 5, 0, 6), (2, 3, 4, 5, 1, 6))
+    del x686
+    t3new += einsum(x687, (0, 1, 2, 3, 4, 5), (2, 3, 0, 4, 5, 1))
+    t3new += einsum(x687, (0, 1, 2, 3, 4, 5), (3, 2, 0, 5, 4, 1))
+    del x687
+    x688 = np.zeros((navir, nocc, nocc, nvir), dtype=np.float64)
+    x688 += einsum(t1[np.ix_(so,sv)], (0, 1), x168, (2, 3, 1, 4), (2, 0, 3, 4))
+    x689 = np.zeros((navir, nocc, nocc, nocc), dtype=np.float64)
+    x689 += einsum(t1[np.ix_(so,sv)], (0, 1), x688, (2, 3, 4, 1), (2, 3, 0, 4))
+    t3new += einsum(t2[np.ix_(so,sO,sv,sv)], (0, 1, 2, 3), x689, (4, 5, 6, 0), (6, 5, 1, 3, 2, 4)) * -1.0
+    del x689
+    x690 = np.zeros((naocc, navir, nocc, nocc, nocc, nvir), dtype=np.float64)
+    x690 += einsum(t2[np.ix_(so,sO,sv,sv)], (0, 1, 2, 3), x688, (4, 5, 6, 3), (1, 4, 5, 0, 6, 2))
+    x691 = np.zeros((naocc, navir, nocc, nocc, nvir, nvir), dtype=np.float64)
+    x691 += einsum(t1[np.ix_(so,sv)], (0, 1), x690, (2, 3, 4, 5, 0, 6), (2, 3, 4, 5, 1, 6))
+    del x690
+    t3new += einsum(x691, (0, 1, 2, 3, 4, 5), (2, 3, 0, 4, 5, 1))
+    t3new += einsum(x691, (0, 1, 2, 3, 4, 5), (3, 2, 0, 5, 4, 1))
+    del x691
+    x692 = np.zeros((navir, nocc, nocc, nvir), dtype=np.float64)
+    x692 += einsum(t1[np.ix_(so,sv)], (0, 1), x168, (2, 3, 4, 1), (2, 0, 3, 4))
+    del x168
+    x693 = np.zeros((naocc, navir, nocc, nocc, nocc, nvir), dtype=np.float64)
+    x693 += einsum(t2[np.ix_(so,sO,sv,sv)], (0, 1, 2, 3), x692, (4, 5, 6, 3), (1, 4, 5, 0, 6, 2))
+    t3new += einsum(t1[np.ix_(so,sv)], (0, 1), x693, (2, 3, 4, 5, 0, 6), (4, 5, 2, 1, 6, 3)) * -1.0
+    del x693
+    x694 = np.zeros((naocc, navir, nocc, nocc, nocc, nvir), dtype=np.float64)
+    x694 += einsum(t2[np.ix_(so,sO,sv,sv)], (0, 1, 2, 3), x692, (4, 5, 6, 2), (1, 4, 5, 0, 6, 3))
+    del x692
+    t3new += einsum(t1[np.ix_(so,sv)], (0, 1), x694, (2, 3, 4, 5, 0, 6), (4, 5, 2, 6, 1, 3)) * -1.0
+    del x694
+    x695 = np.zeros((naocc, navir, nocc, nocc, nocc, nvir), dtype=np.float64)
+    x695 += einsum(t2[np.ix_(so,sO,sv,sv)], (0, 1, 2, 3), x688, (4, 5, 6, 2), (1, 4, 5, 0, 6, 3))
+    del x688
+    t3new += einsum(t1[np.ix_(so,sv)], (0, 1), x695, (2, 3, 4, 5, 0, 6), (5, 4, 2, 6, 1, 3)) * -1.0
+    del x695
+    x696 = np.zeros((naocc, nocc, nocc, nocc), dtype=np.float64)
+    x696 += einsum(t1[np.ix_(so,sv)], (0, 1), x179, (2, 3, 4, 1), (2, 0, 4, 3))
+    x697 = np.zeros((naocc, nocc, nocc, nvir), dtype=np.float64)
+    x697 += einsum(t1[np.ix_(so,sv)], (0, 1), x696, (2, 3, 4, 0), (2, 3, 4, 1))
+    t3new += einsum(t2[np.ix_(so,so,sv,sV)], (0, 1, 2, 3), x697, (4, 5, 0, 6), (1, 5, 4, 2, 6, 3)) * -1.0
+    x698 = np.zeros((naocc, navir, nocc, nocc, nvir, nvir), dtype=np.float64)
+    x698 += einsum(t2[np.ix_(so,so,sv,sV)], (0, 1, 2, 3), x697, (4, 5, 1, 6), (4, 3, 5, 0, 6, 2))
+    del x697
+    t3new += einsum(x698, (0, 1, 2, 3, 4, 5), (2, 3, 0, 4, 5, 1))
+    t3new += einsum(x698, (0, 1, 2, 3, 4, 5), (3, 2, 0, 5, 4, 1))
+    del x698
+    x699 = np.zeros((naocc, nocc, nocc, nvir), dtype=np.float64)
+    x699 += einsum(t1[np.ix_(so,sv)], (0, 1), x696, (2, 3, 0, 4), (2, 3, 4, 1))
+    del x696
+    t3new += einsum(t2[np.ix_(so,so,sv,sV)], (0, 1, 2, 3), x699, (4, 5, 1, 6), (5, 0, 4, 6, 2, 3)) * -1.0
+    t3new += einsum(t2[np.ix_(so,so,sv,sV)], (0, 1, 2, 3), x699, (4, 5, 0, 6), (1, 5, 4, 6, 2, 3)) * -1.0
+    del x699
+    x700 = np.zeros((naocc, navir, nocc, nocc, nocc, nocc), dtype=np.float64)
+    x700 += einsum(t2[np.ix_(so,so,sv,sV)], (0, 1, 2, 3), x179, (4, 5, 6, 2), (4, 3, 1, 0, 6, 5))
+    del x179
+    x701 = np.zeros((naocc, navir, nocc, nocc, nocc, nvir), dtype=np.float64)
+    x701 += einsum(t1[np.ix_(so,sv)], (0, 1), x700, (2, 3, 4, 5, 6, 0), (2, 3, 4, 5, 6, 1))
+    del x700
+    t3new += einsum(t1[np.ix_(so,sv)], (0, 1), x701, (2, 3, 4, 5, 0, 6), (4, 5, 2, 1, 6, 3)) * -1.0
+    del x701
+    x702 = np.zeros((naocc, navir, nocc, nvir), dtype=np.float64)
+    x702 += einsum(t1[np.ix_(so,sV)], (0, 1), t1[np.ix_(sO,sv)], (2, 3), v.ovov, (4, 3, 0, 5), (2, 1, 4, 5))
+    x703 = np.zeros((naocc, navir, nocc, nocc), dtype=np.float64)
+    x703 += einsum(t1[np.ix_(so,sv)], (0, 1), x702, (2, 3, 4, 1), (2, 3, 0, 4))
+    t3new += einsum(t2[np.ix_(so,so,sv,sv)], (0, 1, 2, 3), x703, (4, 5, 6, 1), (6, 0, 4, 3, 2, 5)) * -1.0
+    del x703
+    x704 = np.zeros((naocc, navir, nocc, nvir), dtype=np.float64)
+    x704 += einsum(t1[np.ix_(so,sV)], (0, 1), t1[np.ix_(sO,sv)], (2, 3), v.ovov, (4, 5, 0, 3), (2, 1, 4, 5))
+    x705 = np.zeros((naocc, navir, nocc, nocc), dtype=np.float64)
+    x705 += einsum(t1[np.ix_(so,sv)], (0, 1), x704, (2, 3, 4, 1), (2, 3, 0, 4))
+    x706 = np.zeros((naocc, navir, nocc, nocc, nvir, nvir), dtype=np.float64)
+    x706 += einsum(t2[np.ix_(so,so,sv,sv)], (0, 1, 2, 3), x705, (4, 5, 6, 1), (4, 5, 6, 0, 2, 3))
+    del x705
+    t3new += einsum(x706, (0, 1, 2, 3, 4, 5), (2, 3, 0, 5, 4, 1))
+    t3new += einsum(x706, (0, 1, 2, 3, 4, 5), (3, 2, 0, 4, 5, 1))
+    del x706
+    x707 = np.zeros((naocc, navir, nocc, nocc, nocc, nvir), dtype=np.float64)
+    x707 += einsum(t2[np.ix_(so,so,sv,sv)], (0, 1, 2, 3), x702, (4, 5, 6, 3), (4, 5, 0, 1, 6, 2))
+    del x702
+    t3new += einsum(t1[np.ix_(so,sv)], (0, 1), x707, (2, 3, 4, 5, 0, 6), (5, 4, 2, 1, 6, 3)) * -1.0
+    del x707
+    x708 = np.zeros((naocc, navir, nocc, nocc, nocc, nvir), dtype=np.float64)
+    x708 += einsum(t2[np.ix_(so,so,sv,sv)], (0, 1, 2, 3), x704, (4, 5, 6, 3), (4, 5, 0, 1, 6, 2))
+    del x704
+    x709 = np.zeros((naocc, navir, nocc, nocc, nvir, nvir), dtype=np.float64)
+    x709 += einsum(t1[np.ix_(so,sv)], (0, 1), x708, (2, 3, 4, 5, 0, 6), (2, 3, 4, 5, 1, 6))
+    del x708
+    t3new += einsum(x709, (0, 1, 2, 3, 4, 5), (3, 2, 0, 4, 5, 1))
+    t3new += einsum(x709, (0, 1, 2, 3, 4, 5), (2, 3, 0, 5, 4, 1))
+    del x709
+    x710 = np.zeros((naocc, navir, nocc, nocc, nocc, nvir), dtype=np.float64)
+    x710 += einsum(t2[np.ix_(so,sO,sV,sv)], (0, 1, 2, 3), x92, (4, 5, 0, 6), (1, 2, 5, 4, 6, 3))
+    del x92
+    t3new += einsum(t1[np.ix_(so,sv)], (0, 1), x710, (2, 3, 4, 5, 0, 6), (5, 4, 2, 6, 1, 3)) * -1.0
+    del x710
+    x711 = np.zeros((naocc, navir, nocc, nocc, nocc, nvir), dtype=np.float64)
+    x711 += einsum(t1[np.ix_(so,sv)], (0, 1), x673, (2, 3, 4, 5, 6, 0), (2, 3, 4, 5, 6, 1))
+    del x673
+    t3new += einsum(t1[np.ix_(so,sv)], (0, 1), x711, (2, 3, 4, 5, 0, 6), (5, 4, 2, 6, 1, 3)) * -1.0
+    del x711
+
+    return {"t1new": t1new, "t2new": t2new, "t3new": t3new}
+