N,N'-1,5-Naphthylenebis[4-(2,3-dichlorophenyl)azo]-3-hydroxy-2-naphthamide

N,N'-1,5-naphthalenediylbis[4-(2,3-dichlorophenyl)azo]- 3-hydroxy-2-Naphthalenecarboxamide

N,N'-naphthalene-1,5-diylbis[4-[(2,3-dichlorophenyl)azo]-3-hydroxynaphthalene-2-carboxamide]