Using NNc1cccc([N+](=O)[O-])c1, O=C(c1ccc(Cl)cc1)c1ccc(Cl)cc1 to produce O=[N+]([O-])c1cccc(NN=C(c2ccc(Cl)cc2)c2ccc(Cl)cc2)c1, please predict the agent for this reaction in SMILES notation in \boxed{$SMILES1, SMILES2, ...} format.