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 monocarboxylic acid anion resulting from the removal of a proton from the carboxylic acid group of trans-heme d hydroxychlorin gamma-spirolactone. It is a conjugate base of a trans-heme d hydroxychlorin gamma-spirolactone.