4NH3OH-5PhBuCOOH, 2NH-PHCH2 AIDS-032597 AIDS032597 {(S)-1-[(1S,2S,3R)-1-Benzyl-3-(4-ethoxy-benzylamino)-2-hydroxy-3-(2-hydroxy-indan-1-ylcarbamoyl)-propylcarbamoyl]-2,2-dimethyl-propyl}-carbamic acid benzyl ester