(2S)-2-(1-benzofuran-5-ylsulfonylamino)-N,N-bis(2-methylpropyl)-N',N'-bis(pyridin-2-ylmethyl)butanediamide;benzyl (3S)-4-[bis(2-methylpropyl)amino]-3-[(2-methylpropan-2-yl)oxycarbonylamino]-4-oxobutanoate;tert-butyl N-[(2S)-1-[bis(2-methylpropyl)amino]-4-[bis(pyridin-2-ylmethyl)amino]-1,4-dioxobutan-2-yl]carbamate;ethanamine;2-methyl-N-(2-methylpropyl)propan-1-amine;(2S)-2-[(2-methylpropan-2-yl)oxycarbonylamino]-4-oxo-4-phenylmethoxybutanoic acid;pyridin-3-ylmethyl (3S)-3-(1-benzofuran-5-ylsulfonylamino)-4-[bis(2-methylpropyl)amino]-4-oxobutanoate;pyridin-3-ylmethyl (3S)-4-[bis(2-methylpropyl)amino]-3-[(2-methylpropan-2-yl)oxycarbonylamino]-4-oxobutanoate;bis(5-sulfinatochloranuidyl-1-benzofuran)