SMILES: C(=C(/C(=O)O)\\O)\\C(=O)O
Description: The molecule is a dicarboxylic acid that is butenedioic acid in which the hydrogen at the 2-position is substituted by a hydroxy group. It is a dicarboxylic acid, a 2-hydroxy carboxylic acid, an enol and a C4-dicarboxylic acid. It derives from a butenedioic acid. It is a conjugate base of an enol-oxaloacetate.