CAS1610029-17-8 (E)-methyl 7-((1R,2R,3R,5S)-5-acetoxy-2-((E)-4,4-difluoro-3-oxooct-1-en-1-yl)-3-((tetrahydro-2H-pyran-2-yl)oxy)cyclopentyl)hept-2-enoate