Using BrCc1ccccc1, O=C(CN1C(=O)CNC1=O)OCc1ccccc1 to produce O=C(CN1C(=O)CN(Cc2ccccc2)C1=O)OCc1ccccc1, please predict the agent for this reaction in SMILES notation in \boxed{$SMILES1, SMILES2, ...} format.