Methyl (1R,5S,6R,7R)-6-(3-Cyclopentyl-3-oxo-E-1-propenyl)-7-tetrahydropyranyloxybicyclo(3.3.0)oct-2-ene-3-γ-pentenoate

Methyl (1S,5S,6R,7R)-7-tert-Butyldimethylsilyloxy-6-(3(R)-tert-butyldimethylsilyloxy-3-cyclopentyl-E-1-propenyl)bicyclo(3.3.0)octane-E-Δ3,δ-pentanoate

(5E)-5-[(3aS,4R,5R,6aS)-4-[(E,3S)-3-cyclopentyl-3-hydroxyprop-1-enyl]-5-hydroxy-3,3a,4,5,6,6a-hexahydro-1H-pentalen-2-ylidene]pentanoic acid