Using COC(=O)c1ccc2ccccc2c1O, O=S(=O)(OCC(F)(F)F)C(F)(F)F to produce COC(=O)c1ccc2ccccc2c1OCC(F)(F)F, please predict the agent for this reaction in SMILES notation in \boxed{$SMILES1, SMILES2, ...} format.