Using COC(=O)CCC(=O)Cl, Fc1cc(Br)ccc1-c1ccccc1 to produce COC(=O)CCC(=O)c1ccc(-c2ccc(Br)cc2F)cc1, please predict the agent for this reaction in SMILES notation in \boxed{$SMILES1, SMILES2, ...} format.