(4S)-4-[[(2S)-2-[[(2S)-2-[[(2S)-2-[[(2S)-4-Amino-2-[[(2S)-2-[[(2S)-2-[[(2S)-2-[[(2S)-2-amino-5-carbamimidamidopentanoyl]amino]-5-oxo-5-[2-[(5-sulfonaphthalen-1-yl)amino]ethylamino]pentanoyl]amino]-4-carboxybutanoyl]amino]-3-methylbutanoyl]amino]-4-oxobutanoyl]amino]-4-methylpentanoyl]amino]-3-carboxypropanoyl]amino]propanoyl]amino]-5-[[(2S)-1-[[(2S)-1-[[(1S)-4-carbamimidamido-1-carboxybutyl]amino]-6-[[4-[[4-(dimethylamino)phenyl]diazenyl]benzoyl]amino]-1-oxohexan-2-yl]amino]-1-oxo-3-phenylpropan-2-yl]amino]-5-oxopentanoic acid