2-(6-Methyl-5-oxo-5,6-dihydro-2H-pyran-2-yl)-1,2,4-triazine-3,5(2H,4H)-dione 6-Aza-1-(2,3, 6-trideoxy-L-glycero-hex-2-enopyranos-4-ulosyl)uracil 6-Aza-1-(2,3,6-trideoxy-L-glycero-hex-2-enopyranos-4-ulosyl) uracil AIDS-160597 AIDS160597 NSC638123 NSC638124