SMILES: C1=CC(=CC=C1/C=C\\C(=O)O)[O-]
Description: The molecule is a hydroxy monocarboxylic acid anion that is the conjugate base of cis-4-coumaric acid; major species at pH 7.3. It has a role as a plant metabolite. It is a conjugate base of a cis-4-coumaric acid.