IUPAC: (4S)-4-{[(2S)-1-[(2S)-1-[(2S)-2-[(2S)-2-{[(2S)-1-{2-[(2S)-2-[(2S)-2-[(2S)-2-[(2S)-2-[(2S)-2-[(2S)-2-amino-3-hydroxypropanamido]-3-methylbutanamido]-3-carboxypropanamido]-4-carbamoylbutanamido]-3-carboxypropanamido]-4-methylpentanamido]acetyl}pyrrolidin-2-yl]formamido}-4-carboxybutanamido]-3-methylbutanoyl]pyrrolidine-2-carbonyl]pyrrolidin-2-yl]formamido}-4-{[(1S)-1-{[(1S)-1-{[(1S)-1-[({[(1S)-1-{[(1S)-1-{[(1S)-1-{[(1S)-4-carbamimidamido-1-{[(1S)-1-carboxy-2-methylpropyl]carbamoyl}butyl]carbamoyl}-3-methylbutyl]carbamoyl}-3-methylbutyl]carbamoyl}ethyl]carbamoyl}methyl)carbamoyl]-3-methylbutyl]carbamoyl}-2-methylpropyl]carbamoyl}-2-carbamoylethyl]carbamoyl}butanoic acid

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