(2S)-N-(4-{(2S)-2-[(2S)-2-(Phenylcarbonylamino)propanoylamino]-3-methylbutanoylamino}(1S,4S)-2,3-dihydroxy-5-phenyl-1-benzylpentyl)-2-[(2S)-2-(phenylcarbonylamino)propanoylamino]-3-methylbutanamide AIDS-107939 AIDS107939