Benzoic acid (3aS,3bR,7aR)-2,2,3b-trimethyl-5-oxo-2,3,3a,3b,4,5,7,7a-octahydro-1H-cyclopenta[a]pentalen-3-yl ester
Benzoic acid (3aS,3bS,6aR,7aR)-2,2,3b-trimethyl-5-oxo-decahydro-cyclopenta[a]pentalen-3-yl ester
Benzoic acid (3aR,3bS,6aS,7aR)-3b-hydroxy-2,2-dimethyl-2,3,3a,3b,6,6a,7,7a-octahydro-1H-cyclopenta[a]pentalen-3-yl ester
Benzoic acid (3aR,6aS,7aS)-2,2-dimethyl-5-oxo-2,3,3a,5,6,6a,7,7a-octahydro-1H-cyclopenta[a]pentalen-3-yl ester
(3α,3aα,3bα,6aβ,7aα)-decahydro-3-(benzyloxy)-2,2-dimethyl-4-oxo-1H-cyclopentapentalene