(4-{[(1R,2S,3S)-3-tert-Butoxycarbonylamino-2-hydroxy-1-((R)-2-hydroxy-indan-1-ylcarbamoyl)-4-phenyl-butylamino]-methyl}-benzyl)-carbamic acid benzyl ester 4NH3OH-5PhBuCOOH, 2NH-PHCH2 AIDS-032581 AIDS032581