N,N'-naphthalene-1,5-diylbis[3-hydroxy-4-[(2-methoxy-4-nitrophenyl)azo]naphthalene-2-carboxamide]

N,N'-(1,5-Naphthalenediyl)bis[3-hydroxy-4-[(2-methoxy-4-nitrophenyl)azo]-2-naphthalenecarboxamide]