Using O=S(=O)(c1ccccc1)N(F)S(=O)(=O)c1ccccc1, Brc1cccc2cc3ccccc3cc12 to produce Fc1cccc2cc3ccccc3cc12, please predict the agent for this reaction in SMILES notation in \boxed{$SMILES1, SMILES2, ...} format.