Using CCOC(=O)CNC, O=S(=O)(Cl)Cc1cccc(C(F)(F)F)c1 to produce CCOC(=O)CN(C)S(=O)(=O)Cc1cccc(C(F)(F)F)c1, please predict the agent for this reaction in SMILES notation in \boxed{$SMILES1, SMILES2, ...} format.