(2S)-N-[4-((2S)-2-{(2S)-2-[(phenylmethoxy)carbonylamino]propanoylamino}-3-methylbutanoylamino)(1S,2S,4S)-2-hydroxy-5-phenyl-1-benzylpentyl]-2-{(2S)-2-[(phenylmethoxy)carbonylamino]propanoylamino}-3-methylbutanamide AIDS-071979 AIDS071979