(2S)-3-(1H-indol-3-yl)-N-[[1-(5-methoxypyridin-2-yl)cyclohexyl]methyl]-2-methyl-2-[(4-nitrophenyl)carbamoylamino]propanamide
(2S)-3-(1H-indol-3-yl)-N-[[1-(5-methoxy-2-pyridyl)cyclohexyl]methyl]-2-methyl-2-[(4-nitrophenyl)carbamoylamino]propanamide
(2S)-3-(1H-indol-3-yl)-N-[[1-(5-methoxy-2-pyridyl)cyclohexyl]methyl]-2-methyl-2-[[[(4-nitrophenyl)amino]-oxomethyl]amino]propanamide
(2S)-3-(1H-indol-3-yl)-N-[[1-(5-methoxy-2-pyridyl)cyclohexyl]methyl]-2-methyl-2-[(4-nitrophenyl)carbamoylamino]propionamide