Using CN(CC(O)c1ccc(F)cc1)S(=O)(=O)c1ccc(Br)s1, CCN(CC)S(F)(F)F to produce CN(CC(F)c1ccc(F)cc1)S(=O)(=O)c1ccc(Br)s1, please predict the agent for this reaction in SMILES notation in \boxed{$SMILES1, SMILES2, ...} format.