(+/-)-4-nitro-benzoic acid-((4ar,9at)-decahydro-benzocyclohepten-5c-yl ester)
(+/-)-4-nitro-benzoic acid-((4ar,9at)-decahydro-benzocyclohepten-5t-yl ester)
(+/-)-4-nitro-benzoic acid-((4ar,9ac)-decahydro-benzocyclohepten-5t-yl ester)
(+/-)-6-((Ξ)-benzylidene)-(4ar,9at)-decahydro-benzocyclohepten-5-one