(1S,5R,6S,7R)-6-(tert-butyldimethylsilyloxymethyl)-3-(1,4-dimethoxycarbonyl-1-butylidene)-7-tetrahydropyranyloxy-2-oxabicyclo<3.3.0>octane

2-[(3aR,4R,5R,6aS)-5-Acetoxy-4-((E)-(S)-3-acetoxy-oct-1-enyl)-hexahydro-cyclopenta[b]furan-(2E)-ylidene]-hexanedioic acid 6-methyl ester

11,15-diacetyl-PGI2 methyl ester