Synonyms: a-D-Glucopyranose, cyclic2,3-(4,4',5,5',6,6'-hexahydroxy[1,1'-biphenyl]-2,2'-dicarboxylate) cyclic 4®2':6®2-[4-[6-[[[4,6-O-[[4-[6-[[[4,6-O-[(4,4',5,5',6,6'-hexahydroxy[1,1'-biphenyl]-2,2'-diyl)dicarbonyl]-2,3-bis-O-(3,4,5-trihydroxybenzoyl)-b-D-glucopyranosyl]oxy]carbonyl]-2,3,4-trihydroxyphenoxy]-4',5,5',6,6'-pentahydroxy[1,1'-biphenyl]-2,2'-diyl]dicarbonyl]-2,3-bis-O-(3,4,5-trihydroxybenzoyl)-b-D-glucopyranosyl]oxy]carbonyl]-2,3,4-trihydroxyphenoxy]-4',5,5',6,6'-pentahydroxy[1,1'-biphenyl]-2,2'-dicarboxylate]1-(3,4,5-trihydroxybenzoate), stereoisomer; Dibenzo[g,i]dibenzo[6',7':8',9'][1,4]dioxecino[2',3':4,5]pyrano[3,2-b][1,5]dioxacycloundecin,a-D-glucopyranose deriv.;Dibenzo[g,i]pyrano[3,2-b][1,5]dioxacycloundecin, a-D-glucopyranose deriv.; Calamanin C