SMILES: C[C@@]12CC(=O)N[C@@]13C[C@H]4[C@H]([C@](C(=N4)C[C@@H]5[C@H]([C@@H]6CCC(=O)/C(=C/7\\[C@H]([C@@H](/C(=C/C(=N3)[C@H]2CCC(=O)O)/[N-]7)CC(=O)O)CCC(=O)O)/C6=N5)CC(=O)O)(C)CC(=O)N)CCC(=O)O.[Ni]
Description: The molecule is a nickel tetrapyrrole found only in methanogenic Archaea. It is the prosthetic group of the enzyme methyl coenzyme M reductase which catalyses the release of methane in the final step of methanogenesis. It has a role as a prosthetic group and a cofactor. It is a conjugate acid of a coenzyme F430(5-).