tetrakis-[N,N,N',N'-(p-(N",N"-di-(n-butyl)amino)phenyl)]phenylenediamine, N,N,N',N'-Tetrakis(4-(dibutylamino)phenyl)-1,4-benzenediamine, N,N,N',N'-tetrakis(p-dibutylaminophenyl)-p-phenylene diamine, N1,N1'-(1,4-Phenylene)bis(N4,N4-dibutyl-N1-(4-(dibutylamino)phenyl)benze