(3,8'-Bi-4H-1-benzopyran)-4,4'-dione, 2,2',3,3'-tetrahydro-3',5,5',7,7'-pentahydroxy-2'-(3-hydroxy-4-methoxyphenyl)-2-(4-hydroxyphenyl)-, (2S,2'R,3R,3'R)-;Kolaflavanone
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