Using O=C=Nc1cccc([N+](=O)[O-])c1, Nc1ccc(N(CCCl)CCCl)cc1 to produce O=C(Nc1ccc(N(CCCl)CCCl)cc1)Nc1cccc([N+](=O)[O-])c1, please predict the agent for this reaction in SMILES notation in \boxed{$SMILES1, SMILES2, ...} format.