(2S)-4,4-Difluoro-1-{(2S,3S)-2-hydroxy-3-[(3-hydroxy-2,5-dimethylbenzoyl)amino]-4-phenylbutanoyl}-3,3-dimethyl-N-(2,2,2-trifluoroethyl)pyrrolidine-2-carboxamide AIDS-190527 AIDS190527