2-Azabicyclo[2.2.1]heptane-3-carboxamide, 2-[(2S)-2-[[(2S)-2-cyclohexyl-2-[(pyrazinylcarbonyl)amino]acetyl]amino]-3,3-dimethyl-1-oxobutyl]-N-[(1S)-1-[2-(cyclopropylamino)-1,2-dioxoethyl]butyl]- AIDS-190043 AIDS190043