Using O=S(=O)(c1ccccc1)N(F)S(=O)(=O)c1ccccc1, COc1cc2c(cc1Br)C(C)(C)CC2 to produce COc1cc2c(cc1F)C(C)(C)CC2, please predict the agent for this reaction in SMILES notation in \boxed{$SMILES1, SMILES2, ...} format.