Using CC(C)(C)C(=O)CBr, COC(=O)c1cc(-c2ccc(Cl)cc2)c(-c2ccccc2Cl)[nH]c1=O to produce COC(=O)c1cc(-c2ccc(Cl)cc2)c(-c2ccccc2Cl)nc1OCC(=O)C(C)(C)C, please predict the agent for this reaction in SMILES notation in \boxed{$SMILES1, SMILES2, ...} format.