Synonyms: 1,3-Benzenediol,5-[5-[2-[3-(3,5-dihydroxyphenyl)-2,3-dihydro-6-hydroxy-2-(4-hydroxyphenyl)-4-benzofuranyl]ethenyl]-2,2',3,3'-tetrahydro-6'-hydroxy-2,2'-bis(4-hydroxyphenyl)[3,4'-bibenzofuran]-3'-yl]-,[2R-[2a,3b(2'S*,3'S*),5[E(2S*,3S*)]]]-; (-)-Vitisin B; VitisinB; Vitisin B (Vitis coignetiae)