(2S)-N-{4-[(2S)-2-(Benzimidazol-2-ylcarbonylamino)-3,3-dimethylbutanoylamino](1S,2S,3S,4S)-3-hydroxy-2-(hydroxymethyl)-5-phenyl-1-benzylpentyl}-2-(benzimidazol-2-ylcarbonylamino)-3,3-dimethylbutanamide AIDS-113261 AIDS113261