1,3,5-phenyltris-4,4′,4′′-(2-hydroxybenzylidene)benzohydrazide
N′,N′′,N′′′-nitrilotris-4,4′,4′′-(2-hydroxybenzylidene)-benzohydrazide
4,4',4''-((1,3,5-triazine-2,4,6-triyl)tris (azanediyl))tri(benzohydrazide)
N4,N4-bis(4'-amino-[1,1'-biphenyl]-4-yl)-[1,1'-biphenyl]-4,4'-diamine