(3S,3bR,S,7R,7aR)-3a,3b,4,5,6,7-Hexahydro-3,7-dimethyl-4-(1-methylethyl)-1H-cyclopenta[1,3]cyclopropa[1,2]benzene; [3S-(3aα,3b β,4 β,7α,7S*)]-3a,3b,4,5,6,7-Hexahydro-3,7-dimethyl-4-(1-methylethyl)-1H-cyclopenta[1,3]cyclopropa[1,2]benzene; (-)-3aα,3bα,4,5,6,7-Hexahydro-4α-Sopropyl-3,7 β-dimethyl-1H-cyclopenta[1,3]cyclopropa[1,2]benzene; (3S,3bR,S,7R,7aR)-3a,3b,4,5,6,7-Hexahydro-3,7-dimethyl-4-(1-methylethyl)-1H-cyclopenta[1,3]cyclopropa[1,2]benzene; (-)-&al