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