The molecule is the cyclic tetrapyrrole anion that is the octacarboxylate anion of uroporphyrinogen I. It is a conjugate base of a uroporphyrinogen I.
3-[7,12,17-tris(2-carboxylatoethyl)-3,8,13,18-tetrakis(carboxylatomethyl)-5,10,15,20,21,22,23,24-octahydroporphyrin-2-yl]propanoate