(S)-2-[(1-{[(2,7-Dimethyl-4-oxo-3,4-dihydro-quinazolin-6-ylmethyl)-prop-2-ynyl-amino]-fluoro-phenyl}-methanoyl)-amino]-5-(5-oxo-4,5-dihydro-1H-[1,2,4]triazole-3-sulfinyl)-pentanoic acid AIDS-106627 AIDS106627