D-Glucose,cyclic4,6-[4-(6-carboxy-2,3,4-trihydroxyphenoxy)-4',5,5',6,6'-pentahydroxy[1,1'-biphenyl]-2,2'-dicarboxylate]3-(3,4,5-trihydroxybenzoate), 2-ester with D-glucose cyclic4,6-(4,4',5,5',6,6'-hexahydroxy[1,1'-biphenyl]-2,2'-dicarboxylate)3-(3,4,5-tr