Using CC(=O)OC(C)(C)C, Fc1ccc(-c2nc(Br)cc(Br)c2CBr)c(Cl)c1 to produce CC(C)(C)OC(=O)CCc1c(Br)cc(Br)nc1-c1ccc(F)cc1Cl, please predict the agent for this reaction in SMILES notation in \boxed{$SMILES1, SMILES2, ...} format.