(2S)-N-[(4S)-3,4-Dihydro-2H-chromen-4-yl]-4,4-difluoro-1-{(2S,3S)-2-hydroxy-3-[(3-hydroxy-2-methylbenzoyl)amino]-4-phenylbutanoyl}-3,3-dimethylpyrrolidine-2-carboxamide AIDS-190495 AIDS190495