Using O=C1CC(=O)N(c2ccccc2)c2ccccc2N1, O=C(CBr)N(c1ccccc1)C1CC1 to produce O=C1CC(=O)N(c2ccccc2)c2ccccc2N1CC(=O)N(c1ccccc1)C1CC1, please predict the agent for this reaction in SMILES notation in \boxed{$SMILES1, SMILES2, ...} format.