Using O=S(=O)(Cl)C(F)(F)C(F)(F)CCO, O=C1CCC(=O)N1O to produce O=C1CCC(=O)N1OS(=O)(=O)C(F)(F)C(F)(F)CCO, please predict the agent for this reaction in SMILES notation in \boxed{$SMILES1, SMILES2, ...} format.