Using O=S(=O)(Cl)c1ccc(OC(F)(F)F)cc1, C[C@H]1CN(C(=O)OC(C)(C)C)CCN1 to produce C[C@H]1CN(C(=O)OC(C)(C)C)CCN1S(=O)(=O)c1ccc(OC(F)(F)F)cc1, please predict the agent for this reaction in SMILES notation in \boxed{$SMILES1, SMILES2, ...} format.