SMILES: C(=C(/C(=O)O)\\[O-])(\\C(=O)O)/[O-]
Description: The molecule is a C4-dicarboxylate resuting from deprotonation of both carboxy groups of dihydroxyfumaric acid. It derives from a fumarate(2-). It is a conjugate base of a dihydroxyfumaric acid.