The molecule is dicarboxylate anion of 2,4-dihydroxyhept-2-enedioic acid. It is a conjugate base of a 2,4-dihydroxyhept-2-enedioic acid. It is a tautomer of a 4-hydroxy-2-oxoheptanedioate.
(Z)-4,7-dihydroxy-6-oxido-7-oxohept-5-enoate