Synonyms: b-D-Glucopyranose, cyclic3,6-[(1R)-4,4',5,5',6,6'-hexahydroxy[1,1'-biphenyl]-2,2'-dicarboxylate]1-(3,4,5-trihydroxybenzoate), cyclic 2?5:4?1-ester with(2S)-[(3S,4S)-5-carboxy-3,4-dihydro-3,7,8-trihydroxy-2-oxo-2H-1-benzopyran-4-yl]butanedioicacid, stereoisomer