8,14-methano-2H,14H-1,7,9-trioxabenzo[6,7]cycloocta[1,2-a]naphthalene-3,5,11,13,15-pentol, 2-(3,4-dihydroxyphenyl)-3,4-dihydro-8-(3,4,5-trihydroxyphenyl)-, (2R,3R,8S,14R,15R)- Epigallocatechin-(2beta-