SMILES: CC1=C(C2=CC3=NC(=CC4=C(C(=C([N-]4)C=C5C(=C(C(=N5)C=C1[N-]2)C=C)C)C=C)C)C(=C3CCC(=O)O)C)CCC(=O)O.[Fe]
Description: The molecule is heme b in which the iron has oxidation state +2. It has a role as a human metabolite and a cofactor. It is a heme b and a ferroheme. It is a conjugate acid of a ferroheme b(2-).