2,4(1H,3H)-Pyrimidinedione, 1-[2,3-dideoxy-5-O-[(1,1-dimethylethyl)dimethylsilyl]-3-[[[[[(1,1-dimethylethyl)dimethylsilyl]oxy]amino]carbonyl]amino]pentofuranosyl]-5-methyl- AIDS-151696 AIDS151696 NSC693100