(2S)-N-[4-((2S)-2-{(2S)-3-Hydroxy-2-[(phenylmethoxy)carbonylamino]propanoylamino}-3-methylbutanoylamino)(1S,4S,2R,3R)-2,3-dihydroxy-5-phenyl-1-benzylpentyl]-2-{(2S)-3-hydroxy-2-[(phenylmethoxy)carbonylamino]propanoylamino}-3-methylbutanamide AIDS-071978 AIDS071978