Using O=S(=O)(Cl)c1ccc2ccccc2c1, OCC(F)(F)C(F)F to produce O=S(=O)(OCC(F)(F)C(F)F)c1ccc2ccccc2c1, please predict the agent for this reaction in SMILES notation in \boxed{$SMILES1, SMILES2, ...} format.