(N1,N4,N9,N13-tetra-tert-butoxycarbonyl)-1,16-diamino-4,9,13-triazahexadecane

2-(2-cyanoethyl)-6,11-bis<(1,1-dimethylethoxy)carbonyl>-2,6,11,15-tetraazahexadecanedioic acid bis(1,1-dimethylethyl) ester

tert-butyl (3-((tert-butoxycarbonyl)(3-((2-cyanoethyl)amino)propyl)amino)propyl)(4-((tert-butoxycarbonyl)(3-((tert-butoxycarbonyl)amino)propyl)amino)butyl)carbamate

25-amino-2,2-dimethyl-4-oxo-3-oxa-5,9,14,18,22-pentaazapentacosane-9,14,18-tricarboxylic acid tris(1,1-dimethylethyl) ester

1-[2,5-bis(methoxymethoxy)phenyl]-26,26-dimethyl-1,24-dioxo-25-oxa-2,6,10,14,19,23-hexaazaheptacosane-10,14,19-tricarboxylic acid tris(1,1-dimethylethyl) ester