(1R-(1alpha,3alpha,4aalpha))-2,3,4,4a,5,6-hexahydro-2,2-dimethyl-1,3-methanonaphthalen-7(1H)-one 1,3-Methanonaphthalen-7(1H)-one, 2,3,4,4a,5,6-hexahydro-2,2-dimethyl-, (1R,3S,4aR)- 68433-81-8 EINECS 270-397-5 cis-Tricyclo(7.1.1.02,7)undec-2-en-one, 10,10-dimethyl-