116409-23-5 6-Ethoxy-7,8-dihydro-6,7-dimethyl-8-(3,4,5-trimethoxyphenyl)-6H-1,3-dioxolo(4,5-g)(1)benzopyran 6H-1,3-Dioxolo(4,5-g)(1)benzopyran, 6-ethoxy-7,8-dihydro-6,7-dimethyl-8-(3,4,5-trimethoxyphenyl)-