5,7-dihydroxy-2-(3,4,5-trihydroxyphenyl)-8-(3,5,7-trihydroxy-2-(3,4,5-trihydroxyphenyl)chroman-4-yl)chroman-3-yl 3,4,5-trihydroxybenzoate AIDS-051683 AIDS051683 Proanthocyanidian der.