SMILES: C1=CC(=C(C=C1/C=C/C(=O)O[C@H]([C@H]([C@@H]([C@@H](C(=O)[O-])O)O)O)C(=O)[O-])O)O
Description: The molecule is a dicarboxylic acid dianion resulting from the removal of a proton from both of the carboxy groups of 2-O-caffeoylglucaric acid; major species at pH 7.3. It is a dicarboxylic acid dianion and a carbohydrate acid derivative anion. It is a conjugate base of a 2-O-caffeoylglucaric acid.