The molecule is a 5-hydroxypenta-2,4-diene-1,2,5-tricarboxylate(3-) that is the conjugate base of (2Z,4E)-5-hydroxypenta-2,4-diene-1,2,5-tricarboxylic acid It is a conjugate base of a (2Z,4E)-5-hydroxypenta-2,4-diene-1,2,5-tricarboxylic acid.
(2Z)-2-[(E)-3-carboxy-3-oxidoprop-2-enylidene]butanedioate