81845-44-5 Ciprostene Ciprosteno [Spanish] Ciprostenum [Latin] Pentanoic acid, 5-(hexahydro-5-hydroxy-6-(3-hydroxy-1-octenyl)-3a-methyl-2(1H)-pentalenylidene)-, (3aS-(2Z,3aalpha,5beta,6alpha(1E,3R*),6aalpha))-