SMILES: C1=CC(=O)OC1CC(=O)[O-]
Description: The molecule is a monocarboxylic acid anion that is the conjugate base of 5-oxo-2,5-dihydro-2-furylacetic acid, formed via deprotonation of the carboxy group; major species at pH 7.3. It is a conjugate base of a 5-oxo-2,5-dihydro-2-furylacetic acid.