SMILES: C(C(=O)/C=C(\\C=C/C(=O)O)/O)C(=O)O
Description: The molecule is an oxodicarboxylic acid that is a tautomer of 4-maleylacetoacetic acid in which the carbonyl of the alpha,beta-unsaturated ketone moiety has tautomerised to the corresponding enol (the 2Z,4E isomer). It is an oxo dicarboxylic acid and an enol. It is a tautomer of a 4-maleylacetoacetic acid.