(2R)-5-(diaminomethylideneamino)-N-[2-[[(2S)-5-(diaminomethylideneamino)-1-oxo-1-(1,3-thiazol-2-yl)pentan-2-yl]amino]-2-oxoethyl]-2-(phenylmethylsulfonylamino)pentanamide
(2R)-5-guanidino-N-[2-[[(1S)-4-guanidino-1-(thiazole-2-carbonyl)butyl]amino]-2-oxo-ethyl]-2-(phenylmethylsulfonylamino)pentanamide
(2R)-5-guanidino-N-[2-[[(1S)-4-guanidino-1-[oxo-(2-thiazolyl)methyl]butyl]amino]-2-oxoethyl]-2-(phenylmethylsulfonylamino)pentanamide
(2R)-2-(benzylsulfonylamino)-5-guanidino-N-[2-[[(1S)-4-guanidino-1-(thiazole-2-carbonyl)butyl]amino]-2-keto-ethyl]valeramide
(2R)-5-(diaminomethylideneamino)-N-[2-[[(2S)-5-(diaminomethylideneamino)-1-oxo-1-(1,3-thiazol-2-yl)pentan-2-yl]amino]-2-oxo-ethyl]-2-(phenylmethylsulfonylamino)pentanamide