SMILES: C=C/C=C(/C(=O)O)\\[O-]
Description: The molecule is the conjugate base of 2-hydroxypenta-2,4-dienoic acid. It derives from a penta-2,4-dienoate. It is a conjugate base of a 2-hydroxypenta-2,4-dienoic acid. It is a tautomer of a 2-oxopent-4-enoate.