Showing structure for 4-{[4-(acetyloxy)-7,8-dimethoxy-2-(4-methoxyphenyl)-3,4-dihydro-2h-1-benzopyran-3-yl]oxy}-7,8-dimethoxy-2-(4-methoxyphenyl)-3,4-dihydro-2h-1-benzopyran-3-yl acetate