28543-07-9 Benzoic acid, 3,4,5-trihydroxy-, 2-(8-(3,4-dihydro-3,5,7-trihydroxy-2H-1-benzopyran-2-yl)-3,4,6-trihydroxy-5-oxo-5H-benzocyclohepten-1-yl)-3,4-dihydro-5,7-dihydroxy-2H-1-benzopyran-3-yl ester, (2R-(2alpha(2R*,3R*),3alpha))- Theaflavin monogallate B