1,3-Thiazol-5-ylmethyl {(1S,2S,4S)-1-benzyl-2-hydroxy-4-[(N-{[[2-(2-isopropyl-1,3-thiazol-4-yl)ethyl](methyl)amino]carbonyl}-L-alanyl)amino]-5-phenylpentyl}carbamate AIDS-192438 AIDS192438