1,5,5-三甲基l-3-亚甲基-1-环己烯

3,3,5-trimethyl-5-propylcyclohexan-1-one

(4,6,6-trimethyl-2-oxocyclohex-3-en-1-yl) acetate

1,5,5-trimethylcyclohexa-1,3-diene