2(1H)-Pyrimidinone, 1-[3-O-acetyl-2-deoxy-5-O-[hydroxy[[tetrahydro-5-[2-oxo-4-[(1-oxohexadecyl)amino]-1(2H)-pyrimidinyl]-2-furanyl]methoxy]phosphinyl]pentofuranosyl]-5-fluoro-4-(octadecylamino)- AIDS-153254 AIDS153254 NSC699493