(1S*,4R*,8S*,11R*)-6-cyclopropyl-3-(diphenylmethyl)-11-methyl-3-azatricyclo<6.2.1.04,11>undec-5-en-2-one
(1S*,4S*,8S*,11R*)-6-cyclopropyl-3-(diphenylmethyl)-11-methyl-3-azatricyclo<6.2.1.04,11>undec-5-en-2-one
(1S*,4R*,8S*,11R*)-3-(diphenylmethyl)-6-isopropyl-11-methyl-3-azatricyclo<6.2.1.04,11>undec-5-en-2-one
(2aS,4aS,7aS,7bR)-1-Benzhydryl-6-isopropyl-7b-methyl-1,2a,3,4,4a,5,7a,7b-octahydro-cyclopenta[cd]indol-2-one
(1R,4S,8R,11S)-11-methyl-3-<(R)-α-phenethyl>-3-azatricyclo<6.2.1.04,11>undec-5-en-2-one