SMILES: C(/C(=C/[O-])/C=C/C(=O)C(=O)O)C(=O)[O-]
Description: The molecule is dicarboxylate anion of 5-formyl-2-hydroxyhepta-2,4-dienedioic acid; major species at pH 7.3. It is a conjugate base of a 5-formyl-2-hydroxyhepta-2,4-dienedioic acid.