2-acetyl-6,6-dimethyl-2,3,4,5,6,7-hexahydro-4-oxo-benzo[b]furan

一氯乙醛

3-羟基-5,5-二甲基环己-2-烯-1-酮

5,5-二甲基-1,3-环己二酮

6,6-Dimethyl-2-phenylsulfanyl-3,5,6,7-tetrahydro-2H-benzofuran-4-one