1-(7,8-Dihydro-6-methoxy-6-methyl-8-(3,4,5-trimethoxyphenyl)-6H-1,3-dioxolo(4,5-g)(1)benzopyran-7-yl)ethanone 117211-88-8 Ethanone, 1-(7,8-dihydro-6-methoxy-6-methyl-8-(3,4,5-trimethoxyphenyl)-6H-1,3-dioxolo(4,5-g)(1)benzopyran-7-yl)-