The molecule is an organophosphate oxoanion obtained by deprotonation of the carboxy and phosphate OH groups of (9Z)-12-(phosphonooxy)octadecenoic acid; major species at pH 7.3. It is a conjugate base of a (9Z)-12-(phosphonooxy)octadecenoic acid.
(Z)-12-phosphonatooxyoctadec-9-enoate