5-{(2S)-2-[N-(tert-Butyl)carbamoyl]-4-[(5-(3-pyridyl)(1,3-oxazol-2-yl))methyl]piperazinyl}(4S,2R)-N-((1S,2R)-2-hydroxyindanyl)-4-hydroxy-2-benzylpentanamide AIDS-171919 AIDS171919