2,3,7'-trimethyl-3',4'-dihydro-1'H-spiro[cyclopentane-1,2'-naphthalen]-1'-one

αα-(2,3-Dimethylcyclopentan)-γ-(p-tolyl)buttersaeure

α.α-(2.3-Dimethylcyclopentan)-β-(p-tolyl)-propionsaeure

甲苯

3,7,8-trimethyl-1,2,3,4,4a,9,10,10a-octahydro-phenanthrene