Using O=C(O)C(CCc1ccccc1)NC1CCc2ccccc2NC1=O, BrCc1ccccc1 to produce O=C1Nc2ccccc2CCC1NC(CCc1ccccc1)C(=O)OCc1ccccc1, please predict the agent for this reaction in SMILES notation in \boxed{$SMILES1, SMILES2, ...} format.