The molecule is a prostaglandin carboxylic acid anion that is the conjugate base of prostaglandin D3, obtained by deprotonation of the carboxy group; major species at pH 7.3. It is a conjugate base of a prostaglandin D3.
(Z)-7-[(1R,2R,5S)-5-hydroxy-2-[(1E,3S,5Z)-3-hydroxyocta-1,5-dienyl]-3-oxocyclopentyl]hept-5-enoate