(2R,3S,4S)-N-[4-[[N-[(Benzyloxy)carbonyl].tert.leucinyl]amino]-3-hydroxy-2-(4-methoxybenzylamino)-5-phenylpentanoyl]valine 2-hydroxybenzylamide AIDS-031498 AIDS031498 Cbz-Val-NHPhCH2-Statine deriv.