Compound 1

(2R,5S,8R,11S,14R,17S,20R,23S)-5-(4-(((Allyloxy)carbonyl)amino)butyl)-23-amino-17-(4-azidobutyl)-24-(1-(tert-butoxycarbonyl)-1H-indol-3-yl)-11-((1-(tert-butoxycarbonyl)-1H-indol-3-yl)methyl)-2,8,14,20-tetraisobutyl-4,7,10,13,16,19,22-heptaoxo-3,6,9,12,15,18,21-heptaazatetracosan-1-oic acid

From: Janus cyclic peptide–polymer nanotubes