Synonyms: Cyclopentaneheptanoicacid, 2-[(1E,3S)-3-[(1S,3S)-3-butylcyclopentyl]-3-hydroxy-1-propenyl]-3-hydroxy-e,5-dioxo-, (1R,2R,3R)- (9CI);Cyclopentaneheptanoic acid,2-[3-(3-butylcyclopentyl)-3-hydroxy-1-propenyl]-3-hydroxy-e,5-dioxo-, [1R-[1a,2b[1E,3S*,3(1S*,3S*)],3a]]-; ONO 1579