for the following products
4-N-[4-(4-Amino-N-(4-aminophenyl)anilino)phenyl]-4-N-(4-aminophenyl)benzene-1,4-diamine | N,N,N',N'-Tetrakis(4-aminophenyl)-1,4-phenylenediamine | N1,N1'-(1,4-phenylene)bis(N1-(4-aminophenyl)benzene-1,4-diamine) and N,N,N',N'-Tetrakis(4-aminophenyl)-1,4-benzenediamine
