(3E)-3-(3,4-Dimethoxybenzylidene)-5-(3,4-dimethoxyphenyl)furan-2(3H)-one;2(3H)-Furanone, 5-(3,4-dimethoxyphenyl)-3-[(3,4-dimethoxyphenyl)methylene]-, (3E)-;3-(3,4-dimethoxybenzylidene)-5-(3,4-dimethoxyphenyl)-2(3H)-furanone
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