2-((1R,2S)-3-oxo-2-((Z)-5-(tetrahydro-2H-pyran-2-yloxy)-pent-2-enyl)cyclopentyl)ethanoic acid

(3aS,4R,6aR)-4-vinylhexahydro-2H-cyclopenta[b]furan-2-one

2-((1R,2S,3R)-3-hydroxy-2-((Z)-5-(tetrahydro-2H-pyran-2-yloxy)pent-2-enyl)cyclopentyl)ethanoic acid