[4,6'-Bi-2H-1-benzopyran]-3,3',5,5',7,7'-hexol,2,2'-bis(3,4-dihydroxyphenyl)-3,3',4,4'-tetrahydro-, [2R-[2a,3a,4b(2'R*,3'S*)]]-; (-)-Epicatechin-(4b-6)-(+)-catechin; Proanthocyanidin B7; Procyanidin B7
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