4-(2-((2E,3aS,4S,5R,6aS)-Hexahydro-5-hydroxy-4-((3S,4S)-3-hydroxy-4-methyl-1,6-nonadiyny)-2(1H)-pentalenylidene)ethoxy)butyric acid 90693-76-8 Eptaloprost Eptaloprost [INN] Eptaloprostum [Latin]