The molecule is a citrate(2-) that is the conjugate base of 3,4-dicarboxy-3-hydroxybutanoate. It is a conjugate base of a 3-carboxy-2-(carboxymethyl)-2-hydroxypropanoate and a 3,4-dicarboxy-3-hydroxybutanoate. It is a tautomer of a 3-carboxy-3-hydroxypentanedioate.
2-(carboxymethyl)-2-hydroxybutanedioate