N-(26-(1,2-dithiolan-3-yl)-22-oxo-3,6,9,12,15,18-hexaoxa-21-azahexa-cosyl)-5-(2-oxohexahydro-1H-thieno[3,4-d]imidazol-4-yl)pentanamide

N-(23-bromo-22-oxo-3,6,9,12,15,18-hexaoxa-21-azatricosyl)-5-(1,2-dithiolan-3-yl)pentanamide

N-(23-chloro-22-oxo-3,6,9,12,15,18-hexaoxa-21-azatricosyl)-5-(1,2-dithiolan-3-yl)pentanamide

methyl 34-(2-methoxy-2-oxoethyl)-33-(methoxycarbonyl)-2,2-dimethyl-4,27- dioxo-3,8,11,14,17,20,23,26-octaoxa-5,28,34-triazahexatriacontan-36-oate