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