Using CCOC(=O)C(=O)Nc1c([N+](=O)[O-])ccc2c1CCCN2, BrCc1ccccc1 to produce CCOC(=O)C(=O)N(Cc1ccccc1)c1c([N+](=O)[O-])ccc2c1CCCN2, please predict the agent for this reaction in SMILES notation in \boxed{$SMILES1, SMILES2, ...} format.