The molecule is a prostaglandin carboxylic acid anion that is the conjugate base of 15-oxoprostaglandin F2alpha, obtained by deprotonation of the carboxy group; major species at pH 7.3. It is a conjugate base of a 15-oxoprostaglandin F2alpha.
(Z)-7-[(1R,2R,3R,5S)-3,5-dihydroxy-2-[(E)-3-oxooct-1-enyl]cyclopentyl]hept-5-enoate