Benzoic acid (3S,3aS,3bR,7aR)-2,2,3b-trimethyl-7-oxo-2,3,3a,3b,4,5,7,7a-octahydro-1H-cyclopenta[a]pentalen-3-yl ester

Benzoic acid (3R,3aR,3bS,7R,7aS)-7-acetoxy-2,2,3b-trimethyl-5-oxo-2,3,3a,3b,4,5,7,7a-octahydro-1H-cyclopenta[a]pentalen-3-yl ester

5,5-dimethyl-2-(methylthio)-2-cyclopenten-1-one

(5,5-Dimethyl-2-methylsulfanyl-cyclopent-2-enyloxymethyl)-benzene

(3aRS,6SR,6aRS)-1-chloromethyl-3,3a,4,5,6,6a-hexahydro-6-hydroxy-5,5-dimethylpentalene