1-[(1-{(2S)-2-[(Tert-butoxy)carbonylamino]-3,3-dimethylbutanoyl}(2S,4R)-4-(7-methoxy-2-phenyl(4-quinolyloxy))pyrrolidin-2-yl)carbonylamino]-2-vinylcyclobutanecarboxylic acid AIDS-162118 AIDS162118