Synonyms: [4,8'-Bi-2H-1-benzopyran]-3,3',5,5',7,7'-hexol,4'-[2,8-bis(3,4-dihydroxyphenyl)-4-[2-(3,4-dihydroxyphenyl)-3,4-dihydro-3,5,7-trihydroxy-2H-1-benzopyran-8-yl]-3,4-dihydro-3,5,11,13,15-pentahydroxy-8,14-methano-2H,14H-1-benzopyrano[7,8-d][1,3]benzodioxocin-10-yl]-2,2'-bis(3,4-dihydroxyphenyl)-3,3',4,4'-tetrahydro-,[2R-[2a,3a,4b(2R*,3R*),8b,10[2'R*,3'R*,4'R*,8'(2R*,3R*,4R*)],14b,15R*]]-;8,14-Methano-2H,14H-1-benzopyrano[7,8-d][1,3]benzodioxocin,[4,8'-bi-2H-1-benzopyran]-3,3',5,5',7,7'-hexol deriv.; Pavetannin D 1