Using COC(=O)Cn1cc(-c2ccc(Cl)cc2)[nH]c1=O, OC(CBr)C(F)(F)F to produce O=C(O)Cn1cc(-c2ccc(Cl)cc2)n(CC(O)C(F)(F)F)c1=O, please predict the agent for this reaction in SMILES notation in \boxed{$SMILES1, SMILES2, ...} format.