D-Glucose, cyclic 4®2':6®2-[(1S)-4-(6-carboxy-2,3,4-trihydroxyphenoxy)-4',5,5',6,6'-pentahydroxy[1,1'-biphenyl]-2,2'-dicarboxylate]2-[2-[(5,10-dihydro-3,7,8-trihydroxy-5,10-dioxo[1]benzopyrano[5,4,3-cde][1]benzopyran-2-yl)oxy]-3,4,5-trihydroxybenz