IUPAC: (4S)-4-{[(2S)-1-[(2S)-2-[(2S)-2-amino-4-(methylsulfanyl)butanamido]-5-carbamimidamidopentanoyl]pyrrolidin-2-yl]formamido}-4-{[(1S,2S)-1-{[(1S)-1-{[(1S,2S)-1-{[(1S)-1-{[(1S)-1-{[(1S)-1-{[(1S)-1-{[(1S)-4-carbamimidamido-1-{[(1S)-4-carbamimidamido-1-{[(1S,2S)-1-[({[(1S)-1-{[(1S)-1-{[(1S)-1-{[(1S)-2-carbamoyl-1-{[(1S)-1-carboxyethyl]carbamoyl}ethyl]carbamoyl}-2-phenylethyl]carbamoyl}-3-carboxypropyl]carbamoyl}-2-carboxyethyl]carbamoyl}methyl)carbamoyl]-2-methylbutyl]carbamoyl}butyl]carbamoyl}butyl]carbamoyl}-3-methylbutyl]carbamoyl}-3-carboxypropyl]carbamoyl}-3-carbamoylpropyl]carbamoyl}ethyl]carbamoyl}-2-methylbutyl]carbamoyl}-2-(1H-indol-3-yl)ethyl]carbamoyl}-2-methylbutyl]carbamoyl}butanoic acid

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