SMILES: C(=C(/C=C(/C(=O)[O-])\\[O-])\\C(=O)[O-])\\C(=O)O
Description: The molecule is tricarboxylate anion of 4-carboxy-2-hydroxyhexa-2,4-dienedioic acid; major species at pH 7.3. It is a conjugate base of a 4-carboxy-2-hydroxyhexa-2,4-dienedioic acid.