(2S)-N-(4-{(2S)-3,3-Dimethyl-2-[(phenylmethoxy)carbonylamino]butanoylamino}(1S,2S,3S,4S)-3-hydroxy-2-(hydroxymethyl)-5-phenyl-1-benzylpentyl)-4,4-dimethyl-2-[(phenylmethoxy)carbonylamino]pentanamide AIDS-113254 AIDS113254