Showing structure for (2r,3s,4r)-2-(4-hydroxyphenyl)-6-[(2s,3r,4r)-3,7,8-trihydroxy-2-(4-hydroxyphenyl)-3,4-dihydro-2h-1-benzopyran-4-yl]-3,4-dihydro-2h-1-benzopyran-3,4,7,8-tetrol