(4R)-4-{N-[(1S)-1-(N-{(1S)-2-[2-(N-{[((1S)-1-Phenylethyl)amino]-N-propylcarbonylamino}carbamoyl)(2S,4R)-4-(phenylmethoxy)pyrrolidinyl]-1-(methylethyl)-2-oxoethyl}carbamoyl)-2-methylbutyl]-N-hydroxycarbamoyl}-4-[(2S)-2-(acetylamino)-3-carboxypropanoylamino]butanoic acid AIDS-162037 AIDS162037