2,4-dimethyl-3-(3-methylbut-3-enyl)cyclohexan-1-one

3甲基-6-(1-甲基乙基)-2-环己烯-1-酮

6-甲基-6-庚烯-2-酮

3,7-dimethylocta-2,7-dien-1-ol

methyl 7-methyl-3-oxooct-7-enoate