Using O=Cc1ccc(OS(=O)(=O)C(F)(F)F)c2ccccc12, OCCO to produce O=S(=O)(Oc1ccc(C2OCCO2)c2ccccc12)C(F)(F)F, please predict the agent for this reaction in SMILES notation in \boxed{$SMILES1, SMILES2, ...} format.