66369-82-2 Mallotinic acid beta-D-glucopyranose, cyclic 3,6-(4-(6-carboxy-2,3,4-trihydroxyphenoxy)-4',5,5',6,6'-pentahydroxy(1,1'-biphenyl)-2,2'-dicarboxylate) 1-(3,4,5-trihydroxybenzoate)