IUPAC:2-[(6S,12S,15S,20aS)-6-(3-carbamimidamidopropyl)-15-(hydroxymethyl)-1,4,7,10,13,16-hexaoxo-icosahydropyrrolo[1,2-a]1,4,7,10,13,16-hexaazacyclooctadecan-12-yl]acetic acid
IUPAC:2-[(6S,12S,15S,20aS)-6-(3-carbamimidamidopropyl)-15-(hydroxymethyl)-1,4,7,10,13,16-hexaoxo-icosahydropyrrolo[1,2-a]1,4,7,10,13,16-hexaazacyclooctadecan-12-yl]acetic acid