123283-87-4 5-Heptenoic acid, 7-(3-hydroxy-2-(3-hydroxy-4-methyl-1-pentenyl)-5-methylenecyclopentyl)-, (1R-(1alpha(Z),2beta(1E,3S*),3alpha))- 9-Deoxy-16,16-dimethyl-tetranor-9-methyleneprostaglandin E2 Tetranor-9-methylene-PGE2