Using CC(=O)CC(=O)Nc1ccc(Cl)ccc1=O, CCOC(=O)CBr to produce CCOC(=O)Cn1c2ccc(Cl)ccc-2c(C(C)=O)c1=O, please predict the agent for this reaction in SMILES notation in \boxed{$SMILES1, SMILES2, ...} format.