b-D-Glucopyranose, cyclic4,6-(4,4',5,5',6,6'-hexahydroxy[1,1'-biphenyl]-2,2'-dicarboxylate)2-[2-(5-carboxy-2,3-dihydroxyphenoxy)-3,4,5-trihydroxybenzoate]1-[4-(6-carboxy-2,3,4-trihydroxyphenoxy)-3,5-dihydroxybenzoate] 3-(3,4,5-trihydroxybenzoate),cyclic 2