1-[8-(4-Hydroxy-3,5-dimethoxyphenyl)-6-methyl-8H-1,3-dioxolo[4,5-g][1]benzopyran-7-yl]ethanone C??? ??, ??, ??

1-[8-(4-Hydroxy-3,5-dimethoxyphenyl)-6-methyl-8H-1,3-dioxolo[4,5-g][1]benzopyran-7-yl]ethanone ?? ?? ? ???

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1-[8-(4-Hydroxy-3,5-dimethoxyphenyl)-6-methyl-8H-1,3-dioxolo[4,5-g][1]benzopyran-7-yl]ethanone ?? ??