116409-02-0 6H-1,3-Dioxolo(4,5-g)(1)benzopyran-7-carboxylic acid, 7,8-dihydro-6-methoxy-6-methyl-8-(3,4,5-trimethoxyphenyl)-, ethyl ester Ethyl 7,8-dihydro-6-methoxy-6-methyl-8-(3,4,5-trimethoxyphenyl)-6H-1,3-dioxolo(4,5-g)(1)benzopyran-7-carboxylate