for the following products
(S)-22-(tert-Butoxycarbonyl)-43,43-dimethyl-10,19,24,41-tetraoxo-3,6,12,15,42-pentaoxa-9,18,23-triazatetratetracontanoic acid | C18-OtBu-L-Glu(AEEA-AEEA)-OtBu | Tbuo-ste-glu(aeea-aeea-oh)-otbu and (S)-22-(tert-Butoxycarbonyl)-10,19,24-trioxo-3,6,12,15-tetraoxa-9,18,23-triazahentetracontane-1,41-dioic acid
