16 P 2-(Bis(5-carboxy-2,4-dihydroxyphenyl)methyl)-3,4,5-trihydroxybenzoic acid homopolymer Benzoic acid, 2-(bis(5-carboxy-2,4-dihydroxyphenyl)methyl)-3,4,5-trihydroxy-, homopolymer DG4415700 Di-beta-resorcylic-gallic acid, polycondensed