The molecule is tricarboxylate anion of 3-(2-carboxyethenyl)-cis,cis-muconic acid; major species at pH 7.3. It is a conjugate base of a 3-(2-carboxyethenyl)-cis,cis-muconic acid.
(2Z,5Z)-4-(carboxylatomethylidene)hepta-2,5-dienedioate