The molecule is dicarboxylate anion of (3Z)-4-(2-carboxyphenyl)-2-oxobut-3-enoic acid. It is a dicarboxylic acid dianion and an oxo carboxylic acid anion. It is a conjugate base of a (3Z)-4-(2-carboxyphenyl)-2-oxobut-3-enoic acid.
2-[(Z)-3-carboxylato-3-oxoprop-1-enyl]benzoate