4a,8,8-trimethyl-4,5,6,7-tetrahydro-3H-naphthalen-2-one

5-(2,6,6-trimethylcyclohexen-1-yl)-2,3-dihydro-1,4-dioxine

2,2,6,6-四甲基环己酮

2-ethynyl-1,3,3-trimethylcyclohexene

2,6,6-三甲基环己-1,3-二烯-1-甲腈