Using CCOC(=O)CBr, O=C(c1ccc([N+](=O)[O-])cc1)N1CCCC(=NO)c2ccccc21 to produce CCOC(=O)CON=C1CCCN(C(=O)c2ccc([N+](=O)[O-])cc2)c2ccccc21, please predict the agent for this reaction in SMILES notation in \boxed{$SMILES1, SMILES2, ...} format.