8-ISO PROSTAGLANDIN E2

9-OXO-11ALPHA,15S-DIHYDROXY-(8BETA)-PROSTA-5Z,13E-DIEN-1-OIC ACID

(Z)-7-[(1S,2R,3R)-3-hydroxy-2-[(E,3S)-3-hydroxyoct-1-enyl]-5-oxocyclopentyl]hept-5-enoic acid