AIDS-160482 AIDS160482 Methyl 3-(3-hydroxy-2,4-dimethylpentanoyl)-2-thioxo-1,3-oxazolidine-4-carboxylate N-(2-(S)-Methyl-3(R)-hydroxy-4-methylpentanoyl)-4(R)-methoxy carbonyl-1,3-oxazolidine-2-thione NSC632224