2,4(1H,3H)-Pyrimidinedione, 1-[3-azido-2,3-dideoxy-5-O-[hydroxy[[(2R,5S)-tetrahydro-5-[5-methyl-2-oxo-4-[(1-oxohexadecyl)amino]-1(2H)-pyrimidinyl]-2-furanyl]methoxy]phosphinyl]-.beta.-L-erythro-pentofuranosyl]-5-methyl- AIDS-150386 AIDS150386 NSC687376