The molecule is a ferroheme having four carboxy groups and oxo groups on two of the pyrrole rings. It is a ferroheme, a metallochlorin, a diketone and a tetracarboxylic acid. It is a conjugate acid of a ferroheme d1(4-).
3-[(8R,13R)-18-[(E)-2-carboxyethenyl]-8,13-bis(carboxymethyl)-3,8,13,17-tetramethyl-7,12-dioxoporphyrin-21,24-diid-2-yl]propanoic acid;iron