115825-93-9 5-Heptenoic aicd, 7-(3-(4-(4-fluorophenoxy)-3-hydroxy-1-butenyl)-7-oxabicyclo(2.2.1)hept-2-yl)-, (1alpha,2alpha(Z),3beta(1E,3S*),4alpha)- 9alpha-Homo-9,11-epoxy-15beta-hydroxy-17,18,19,20-tetranor-16-(4-fluorophenoxy)-5,13-prostadienoic acid EP 171 EP-171