(2R,2′R,3R,3′R,4R)-2,2′-Bis(3,4-dihydroxyphenyl)-3,3′,4,4′-tetrahydro-5,5′,7,7′-tetrahydroxy[4,8′-bi-2H-1-benzopyran]-3,3′-diyl Ester 3,4,5-Trihydroxybenzoic Acid; (−)-Epicatechin-3-O-galloyl-(4β,8)-(−)-epicatechin-3-O-gallate; (2R,3R)-3-O-Galloylepicatechin-4β,8-[(2R,3R)-3-O-galloylepicatechin]; 3,3′-Digalloylprocyanidin B2; Proanthocyanidin B2 3,3′-O-gallate; [3-O-Galloyl]-(−)-epicatechin-(4β,8)-(+)-epicatechin-3-O-gallate