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(2007/10/02)2-(4-acetamidophenyl)-6-methoxy-3-(methoxycarbonyl)-4H-benzopyran-4-one
6-methoxy-2-(4-nitrophenyl)-4-oxo-4H-benzopyran-3-carboxylic acid
2-(4-hydroxyphenyl)-6-methoxy-3-(methoxycarbonyl)-4H-benzopyran-4-one
4'-Amino-6-hydroxyflavone
6-hydroxy-4'-nitroflavone