(2S)-2-[[(2S)-2-[[(2S)-2-[[(2S)-2-[[(2S)-2-[[(2S)-2-[[(2R)-2-acetamido-4-methyl-pentanoyl]amino]-4-methyl-pentanoyl]amino]-4-methyl-pentanoyl]amino]-4-methyl-pentanoyl]amino]-5-guanidino-pentanoyl]amino]-3-methyl-butanoyl]amino]-6-amino-N-[(1S)-1-[2-(4-carbamimidoylphenyl)ethylcarbamoyl]-4-guanidino-butyl]hexanamide