98570-83-3 AIDS-013326 AIDS013326 Benzenepentanoic acid, .beta.,3,4-trihydroxy-, (2R,3S)-2-(3,4-dihydroxyphenyl)-3,4-dihydro-5,7-dihydroxy-2H-1-benzopyran-3-yl ester, (.beta.S)- NSC607319 Phylloflavan