117211-94-6 6H-1,3-Dioxolo(4,5-g)(1)benzopyran, 8-(2,3-dimethoxyphenyl)-7,8-dihydro-6-methoxy-6,7-dimethyl- 8-(2,3-Dimethoxyphenyl)-7,8-dihydro-6-methoxy-6,7-dimethyl-6H-1,3-dioxolo(4,5-g)(1)benzopyran