Using CCOC(=O)CCN(Cc1ccccc1)c1nc(Cl)ncc1[N+](=O)[O-] to produce O=C1CCN(Cc2ccccc2)c2nc(Cl)ncc2N1, please predict the agent for this reaction in SMILES notation in \boxed{$SMILES1, SMILES2, ...} format.