Showing structure for 1,2-bis{[(2r,3r,4s,5r,6s)-6-{[2-(3,4-dihydroxyphenyl)-5,7-dihydroxy-4-oxochromen-3-yl]oxy}-3,4,5-trihydroxyoxan-2-yl]methyl} (1s,2s,3s,4s)-3,4-bis(3,4-dihydroxyphenyl)cyclobutane-1,2-dicarboxylate