(S)-1-[(2S,4R)-2-Hydroxy-4-((1S,2R)-2-hydroxy-indan-1-ylcarbamoyl)-5-phenyl-pentyl]-4-(1-methyl-1-pyridin-3-yl-ethyl)-piperazine-2-carboxylic acid, tert-butylamide AIDS-153897 AIDS153897