[(3aR,3aβ,6aβ)-2-Oxo-4β-(2-bromo-5-cyclohexyl-3-oxo-1-pentenyl)hexahydro-2H-cyclopenta[b]furan]-5α-yl=benzoate

[3aR-(3aalpha,4alpha,5beta,6aalpha)]-4-(2-bromo-5-cyclohexyl-3-oxopent-1-enyl)hexahydro-2-oxo-2H-cyclopenta[b]furan-5-yl benzoate