1-(4-benzyloxyphenoxy)-8-(2-N,N'-bis-tert-butoxycarbonylguanidino-2-phenyl-1-ethyloxy)octane

N-(4-{[4-(p-toluenesulfonylamino)butyl]-(tert-butoxycarbonyl)amino}butyl)-N-{4-[N',N''-bis(tert-butoxycarbonyl)guanidino]butyl}carbamic acid tert-butyl ester

N-(4-{[4-(butane-1-sulfonylamino)butyl]-(tert-butoxycarbonyl)amino}butyl)-N-{4-[N',N''-bis(tert-butoxycarbonyl)guanidino]butyl}carbamic acid tert-butyl ester

N1,N7-bis[N,N'-bis(tert-butoxycarbonyl)guanyl]-N4-[N-methylacetate(2-aminoethyl)] diethylenetriamine