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@]([C@]36CCC(=O)O6)(C)O)CCC(=O)O.[Fe]
Description: The molecule is a metallochlorin that is ferroheme b which is hydroxylated at positions 5 and 6, and in which the resulting 6-hydroxy group undergoes formal condensation with the carboxy group of the 6-carboxyethyl group to afford the corresponding spirolactone in which the oxygen atoms at positions 5 and 6 are trans to each other. It is a gamma-lactone, an azaspiro compound, a ferroheme, a metallochlorin, a monocarboxylic acid, an oxaspiro compound and a tertiary alcohol. It is a conjugate acid of a trans-heme d hydroxychlorin gamma-spirolactone(1-).