Using O=S(=O)(Cl)c1ccc(C(F)(F)F)cc1, Nc1ccc(Br)cn1 to produce O=S(=O)(Nc1ccc(Br)cn1)c1ccc(C(F)(F)F)cc1, please predict the agent for this reaction in SMILES notation in \boxed{$SMILES1, SMILES2, ...} format.