N-1-{2-[N'-tert-butoxycarbonyl-N'-(2-{N-tert-butoxycarbonyl-N-[2-(N-trifluoroacetamido)aminoethyl]}aminoethyl)]aminoethyl}-9-methyl-1-phenazinecarboxamide

N-1-[2-(N'-tert-butoxycarbonyl-N'-{2-[N-(aminoethyl)-N-tert-butoxycarbonyl]aminoethyl})aminoethyl]phenazine-1-carboxamide

N-1-[2-(N'-tert-butoxycarbonyl-N'-{2-[N-(aminoethyl)-N-tert-butoxycarbonyl]aminoethyl})aminoethyl]-9-methyl-1-phenazinecarboxamide

N-1-[(2-{N'-tert-butoxycarbonyl-N'-[(2-{N-tert-butoxycarbonyl-N-[2-(1,8-naphthalimido)ethyl]}amino)ethyl]}amino)ethyl]-9-methylphenazine-1-carboxamide

N-1-{[2-(N'-tert-butoxycarbonyl-N'-{[2-(N-tert-butoxycarbonyl-N-{[2-(oxanthrene-1-carbonyl)amino]ethyl})amino]ethyl})amino]ethyl}-9-methyl-1-phenazinecarboxamide