IUPAC: (2R)-2-{[(2S)-1-[(4R,7S,10S,13S,16S,19R)-19-amino-13-[(2S)-butan-2-yl]-7-(carbamoylmethyl)-10-[(1R)-1-hydroxyethyl]-16-(2-methylpropyl)-6,9,12,15,18-pentaoxo-1,2-dithia-5,8,11,14,17-pentaazacycloicosane-4-carbonyl]pyrrolidin-2-yl]formamido}-5-carbamimidamido-N-(carbamoylmethyl)pentanamide

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