(9R,12S,16S,22R,25S,29S)-9,22-bis(((acetamidomethyl)thio)methyl)-16,29-bis(((benzyloxy)carbonyl)amino)-2,2,8,11,21,24-hexamethyl-12,25-bis((methylthio)methyl)-4,7,10,13,17,20,23,26-octaoxo-3-oxa-14,27-dithia-5,8,11,18,21,24-hexaazatriacontan-30-oic acid

N-Cbz-D-Cys[N-Cbz-D-Cys(N-BOC-Gly-N-Me-L-Cys(Acm)-N-Me-L-Cys(Me))-Gly-N-Me-L-Cys(Acm)-N-Me-L-Cys(Me)]-OTce