Using CS(=O)(=O)Cl, Cn1cc(O)c(=O)c2ccc(OCC(F)(F)F)cc21 to produce Cn1cc(OS(C)(=O)=O)c(=O)c2ccc(OCC(F)(F)F)cc21, please predict the agent for this reaction in SMILES notation in \boxed{$SMILES1, SMILES2, ...} format.