Using O=S(=O)(O)Cl, FC(F)(Br)C(F)(F)Oc1cccc(OC(F)(F)C(F)(F)Br)c1 to produce O=S(=O)(Cl)c1ccc(OC(F)(F)C(F)(F)Br)cc1OC(F)(F)C(F)(F)Br, please predict the agent for this reaction in SMILES notation in \boxed{$SMILES1, SMILES2, ...} format.