AIDS-130920 AIDS130920 DHAC Phosphoramidite Imidazo[1,2-a]-1,3,5-triazin-2(6H)-one, 3-[5-O-[bis(4-methoxyphenyl)phenylmethyl]-3-O-[[bis(1-methylethyl)amino]methoxyphosphino]-2-deoxypentofuranosyl]-3,4,7,8-tetrahydro-6,7-bis(2-methyl-1-oxopropoxy)-8-(2-methyl-1-oxopropyl)- NSC617204