The molecule is a prostaglandin carboxylic acid anion that is the conjugate base of 8-epi-prostaglandin F2alpha, obtained by deprotonation of the carboxy group. Major structure at pH 7.3. It is a conjugate base of an 8-epi-prostaglandin F2alpha.
(Z)-7-[(1S,2R,3R,5S)-3,5-dihydroxy-2-[(E,3S)-3-hydroxyoct-1-enyl]cyclopentyl]hept-5-enoate