SMILES: CC1C2=NC(=CC3=C(C(=C([N-]3)C=C4C(=C(C(=N4)C=C5C(=C(C(=C2)[N-]5)C)C)C)CCC(=O)[O-])CCC(=O)[O-])C)C1(C)C.[Fe]
Description: The molecule is a dicarboxylic acid dianion resulting from the removal of a proton from both of the carboxy groups of iron methylchlorin. Major species at pH 7.3. It is a conjugate base of an iron methylchlorin.