9-亚甲基芴

3,4-二氢-1H-2-苯并噻喃

5H-二茚并[1,2-a:1',2'-c]芴-5,10,15-三酮

2,6,6-trimethylcycloheptan-1-one

2,6,6-trimethyl-2-cycloheptenone