Synonyms: Benzoicacid, 3,4,5-trihydroxy-,(3,4,6-trihydroxy-5-oxo-5H-benzocycloheptene-1,8-diyl)bis(3,4-dihydro-5,7-dihydroxy-2H-1-benzopyran-2,3-diyl)ester, [2R-[2a(2R*,3R*),3a]]-; Benzoic acid,3,4,5-trihydroxy-, (3,4,6-trihydroxy-5-oxo-5H-benzocycloheptene-1,8-diyl)bis[(2R,3R)-3,4-dihydro-5,7-dihydroxy-2H-1-benzopyran-2,3-diyl]ester (9CI); Theaflavin 3; Theaflavin 3,3'-di-O-gallate; Theaflavin3,3'-digallate