1-[(1-{(2S)-2-[(Tert-butoxy)carbonylamino]-3,3-dimethylbutanoyl}(2S,4R)-4-(7-methoxy-2-phenyl(4-quinolyloxy))pyrrolidin-2-yl)carbonylamino]-2-ethylcyclobutanecarboxylic acid AIDS-162119 AIDS162119