methyl 7-((1R,2R,3R)-3-hydroxy-2-((E)-(3S)-3-hydroxy-4-(m-methoxymethylphenyl)-1-butenyl)-5-oxocyclopentyl)-5-thiaheptanoate
methyl 7-((1r,2r,3r)-3-hydroxy-2-((e)-(3s)-3-hydroxy-4-(m-methoxymethylphenyl)-1-butenyl)-5-oxocyclopentyl)-5-thiaheptanoate