121571-14-0 4,5-Heptadienoic acid, 7-(2-(3-hydroxy-4-phenoxy-1-butenyl)-5-oxocyclopentyl)-, methyl ester, (1R-(1alpha(R*),2beta(1E,3R*)))- Methyl-9-oxo 15-hydroxy-16-phenoxy-17,18,19,20-tetranorprosta-4,5,13-trienoate RS 61756-007 RS-61756-007