7-[(1R,2R,3R,5S)-3,5-Dihydroxy-2-[3(R)-hydroxy-4-[3-(trifluoromethyl)phenoxy]-1(E)-butenyl]cyclopentyl]-5(Z)-heptenoic acid isopropyl ester; (+)-16-[3-(Trifluoromethoxy)phenoxy]-17,18,19,20-tetranorprostaglandin F 2alpha isopropyl ester