2-{[2-(3,4-Dihydroxyphenyl)-5,7-dihydroxy-3,4-dihydro-2H-chromen-3-yl]oxy}-2-(3,4,5-trihydroxyphenyl)chromane-3,4,5,7-tetrol 20136-67-8 AIDS-016604 AIDS016604 NSC143101 Prodelphiniline