Using O=C(CBr)OCc1ccccc1, O=C1NC(=O)c2cc([N+](=O)[O-])ccc21 to produce O=C(CN1C(=O)c2ccc([N+](=O)[O-])cc2C1=O)OCc1ccccc1, please predict the agent for this reaction in SMILES notation in \boxed{$SMILES1, SMILES2, ...} format.