(2R)-1-({1-[(2S)-2-({4-[(Tert-butyl)oxycarbonyl]phenyl}amino)-3,3-dimethylbutanoyl](2S,4R)-4-(2,6-di(2-pyridyl)(4-pyridyloxy))pyrrolidin-2-yl}carbonylamino)-2-vinylcyclopropanecarboxylic acid AIDS-162108 AIDS162108