methyl 2,6,6-trimethyl-3-oxocyclohexene-1-carboxylate

2,6,6-三甲基环己-2-烯-1-甲醇

1,5,5-trimethylcyclohexene

1,3,3-三甲基环己烯

2-(4,4-dimethyl-3,7-dioxo-1,2,5,6-tetrahydroinden-2-yl)acetic acid