Using CCOC(=O)CN, O=C(O)c1ccc(S(=O)(=O)Nc2ccc(F)c(C(F)(F)F)c2)cc1 to produce CCOC(=O)CNC(=O)c1ccc(S(=O)(=O)Nc2ccc(F)c(C(F)(F)F)c2)cc1, please predict the agent for this reaction in SMILES notation in \boxed{$SMILES1, SMILES2, ...} format.