Using Fc1ccc(Cl)c(F)c1CBr, COC(=O)[C@H]1c2ccc(O)cc2CCN1C(=O)OC(C)(C)C to produce COC(=O)[C@H]1c2ccc(OCc3c(F)ccc(Cl)c3F)cc2CCN1C(=O)OC(C)(C)C, please predict the agent for this reaction in SMILES notation in \boxed{$SMILES1, SMILES2, ...} format.