Using O=C1NC(=O)c2ccccc21, OCc1ccc2ncc(Br)cc2c1 to produce O=C1c2ccccc2C(=O)N1Cc1ccc2ncc(Br)cc2c1, please predict the agent for this reaction in SMILES notation in \boxed{$SMILES1, SMILES2, ...} format.