9-Methyltetracyclo[6.2.1.13,6.02,7]dodeca-4-ene

5-Methyltetracyclo[6.2.1.13,6.02,7]dodeca-9-ene

1,2,3,4,4a,5,8,8a-octahydro-2-methyl-1,4:5,8-dimethanonaphthalene