D-Glucose, cyclic 4->2':6->2-(4-(6-carboxy-2,3,4-trihydroxyphenoxy)-4',5,5',6,6'-pentahydroxy(1,1'-biphenyl)-2,2'-dicarboxylate) cyclic 2,3-(4,4',5,5',6,6'-hexahydroxy(1,1'-biphenyl)-2,2'-dicarboxylate), 2-ester with beta-D-glucopyranose cyc