(1S,3aR,6aS)-2-[(2S)-2-[[(2S)-2-cyclohexyl-2-(pyrazine-2-carbonylamino)acetyl]amino]-3,3-dimethylbutanoyl]-N-[(3S)-1-(cyclopropylamino)-1,2-dioxohexan-3-yl]-3,3a,4,5,6,6a-hexahydro-1H-cyclopenta[c]pyrrole-1-carboxamide (1S,3aR,6aS)-2-[(2S)-2-[[(2S)-2-cyclohexyl-2-(pyrazine-2-carbonylamino)acetyl]amino]-3,3-dimethyl-butanoyl]-N-[(1S)-1-[2-(cyclopropylamino)-2-oxo-acetyl]butyl]-3,3a,4,5,6,6a-hexahydro-1H-cyclopenta[c]pyrrole-1-carboxamide (1S,3aR,6aS)-2-[(2S)-2-[[(2S)-2-cyclohexyl-1-oxo-2-[[oxo-(2-pyrazinyl)methyl]amino]ethyl]amino]-3,3-dimethyl-1-oxobutyl]-N-[(1S)-1-[2-(cyclopropylamino)-1,2-dioxoethyl]butyl]-3,3a,4,5,6,6a-hexahydro-1H-cyclopenta[c]pyrrole-1-carboxamide (1S,3aR,6aS)-2-[(2S)-2-[[(2S)-2-cyclohexyl-2-(pyrazine-2-carbonylamino)acetyl]amino]-3,3-dimethyl-butanoyl]-N-[(1S)-1-[2-(cyclopropylamino)-2-keto-acetyl]butyl]-3,3a,4,5,6,6a-hexahydro-1H-cyclopenta[c]pyrrole-1-carboxamide (1S,3aR,6aS)-2-[(2S)-2-[[(2S)-2-cyclohexyl-2-(pyrazin-2-ylcarbonylamino)ethanoyl]amino]-3,3-dimethyl-butanoyl]-N-[(3S)-1-(cyclopropylamino)-1,2-dioxo-hexan-3-yl]-3,3a,4,5,6,6a-hexahydro-1H-cyclopenta[c]pyrrole-1-carboxamide AIDS213006 VX-950 WO-00218369 2-(2-{2-Cyclohexyl-2-[(pyrazine-2-carbonyl)-amino]-acetylamino}-3,3-dimethyl-butyryl)-octahydro-cyclopenta[c]pyrrole-1-carboxylic acid (1-cyclopropylaminooxalyl-butyl)-amide AIDS-213006