.beta.-D-Glucopyranose, cyclic 4,6-[(1S)-4,4,5,5,6,6-hexahydroxy[1,1-biphenyl]-2,2-dicarboxylate] 3-(3,4,5-trihydroxybenzoate), cyclic 1.fwdarw.2:2.fwdarw.1-ester with 2-(5-carboxy-2,3-dihydroxyphenoxy)-5-[6-[[4,6-O-[[(1S)-4,4,5,5,6,6-hexahydroxy[1,1-biph