Using O=C1NC(=O)c2ccccc21, CC(=O)Oc1ccccc1C(=O)Nc1ccc(Cl)cc1CBr to produce O=C(Nc1ccc(Cl)cc1CN1C(=O)c2ccccc2C1=O)c1ccccc1O, please predict the agent for this reaction in SMILES notation in \boxed{$SMILES1, SMILES2, ...} format.