3,4-DIMETHOXYACETOPHENONE3',4'-Dimethoxyacetophenone1-(3,4-Dimethoxyphenyl)ethan-1-one3′,4′-Dimethoxyacetophenone3′,4′-二甲氧基苯乙酮3',4'-二甲氧基苯乙酮3',4'-DimethoxyacetophenoneAcetoveratrone3,4-dimethoxyphenyl methyl ketone3',4'-dimethoxyacetophenoneacetoveratrone3,4-dimethoxyphenylacetal