(Hexahydrocyclopenta[b]pyrrol-3a(1H)-yl)methanol
rel-(3aR,6aR)-Hexahydrocyclopenta[c]pyrrole-3a(1H)-carboxylic acid
4,6,6,7,8,8-Hexamethyl-1,3,4,6,7,8-hexahydrocyclopenta[g]isochromene
1,2,3,3a,4,8b-Hexahydrocyclopenta[b]indole
