(+)-(4Z)-7-((1R,2R,3S,5S)-5-(4-Biphenylmethoxy)-3-hydroxy-2-piperidinocyclopentyl)-4-heptenoic acid, hydrochloride 4-Heptenoic acid, 7-(5-((1,1'-biphenyl)-4-ylmethoxy)-3-hydroxy-2-(1-piperidinyl)cyclopentyl)-, hydrochloride, (1R-(1alpha(Z),2beta,3beta,5alpha))- 87248-13-3 GR 32191B VAPIPROST HYDROCHLORIDE Vapiprost hydrochloride [USAN]