Compound 6

3-(3-(1-((14S,17S,20S,23S,26S,29S)-33-amino-26-(2-amino-2-oxoethyl)-29-((S)-2-(((S)-1-(((S)-1-((S)-2-(((S)-1-(((2S,3S)-1-(((S)-1-carboxy-3-methylbutyl)amino)-3-methyl-1-oxopentan-2-yl)amino)-3-(4-hydroxyphenyl)-1-oxopropan-2-yl)carbamoyl)pyrrolidin-1-yl)-5-guanidino-1-oxopentan-2-yl)amino)-5-guanidino-1-oxopentan-2-yl)carbamoyl)pyrrolidine-1-carbonyl)-14-(2-carboxyethyl)-23-(carboxymethyl)-20-(4-hydroxybenzyl)-17-isobutyl-12,15,18,21,24,27-hexaoxo-3,6,9-trioxa-13,16,19,22,25,28-hexaazatritriacontyl)-1H-1,2,3-triazol-4-yl)propoxy)-5-(3-(3,5-dimethyl-1H-pyrazol-4-yl)propoxy)benzoic acid

From: A biomimetic approach for enhancing the in vivo half-life of peptides