SMILES: C1=CC=C(C=C1)/C(=C\\C=C\\C(=O)C(=O)O)/[O-]
Description: The molecule is the 5-oxo monocarboxylic acid anion resulting from the removal of the proton from the carboxylic acid group of 2-hydroxy-6-oxo-6-phenylhexa-2,4-dienoic acid. It is a conjugate base of a 2-hydroxy-6-oxo-6-phenylhexa-2,4-dienoic acid. It is a tautomer of a 2,6-dioxo-6-phenylhexa-3-enoate(1-).