4NH3OH-5PhBuCOOH, 2NH-PHCH2 AIDS-032598 AIDS032598 {(S)-1-[(1S,2S,3R)-1-Benzyl-2-hydroxy-3-[4-(2-hydroxy-ethoxy)-benzylamino]-3-(2-hydroxy-indan-1-ylcarbamoyl)-propylcarbamoyl]-2,2-dimethyl-propyl}-carbamic acid benzyl ester