Using O=C(O)CCS(=O)(=O)Nc1ccc(F)cc1C(F)(F)F, CCOC(=O)CN to produce CCOC(=O)CNC(=O)CCS(=O)(=O)Nc1ccc(F)cc1C(F)(F)F, please predict the agent for this reaction in SMILES notation in \boxed{$SMILES1, SMILES2, ...} format.