2,3,4,6,7,8-六氢-4-(3-羟基苯基)-7,7-二甲基-2-硫代-5(1H)-喹唑啉酮

2-ethoxy-7,7-dimethyl-3,4,6,8-tetrahydro-2H-chromen-5-one

6,6-dimethyl-2,3,4,5,6,7-hexahydrobenzo[b]furan-4-one

1,2-bis(3-oxo-5,5-dimethyl-1-cyclohexenyloxy)ethane