Synonyms: b-D-Glucopyranose, cyclic4,6-[(1S)-4,4',5,5',6,6'-hexahydroxy[1,1'-biphenyl]-2,2'-dicarboxylate]3-(3,4,5-trihydroxybenzoate), cyclic 1®2:2®1-ester with 5-[6-[[1,3-bis-O-(3,4,5-trihydroxybenzoyl)-b-D-glucopyranos-2-O-yl]carbonyl]-2,3,4-trihydroxyphenoxy]-2-(5-carboxy-2,3-dihydroxyphenoxy)-3,4-dihydroxybenzoicacid (9CI)