SMILES: C(=C/C(=O)/C=C/C(=O)O)\\C=C(\\C(=O)[O-])/[O-]
Description: The molecule is a dicarboxylic acid dianion arising from deprotonation of both carboxy groups of 2-hydroxy-6-oxonona-2,4,7-trienedioic acid. It is a conjugate base of a 2-hydroxy-6-oxonona-2,4,7-trienedioic acid.