Showing structure for (2r,3r)-2-(3,4-dihydroxyphenyl)-4-[(2r,3r)-3,5,7-trihydroxy-2-(3,4,5-trihydroxyphenyl)-3,4-dihydro-2h-1-benzopyran-8-yl]-3,4-dihydro-2h-1-benzopyran-3,5,7-triol