Using O=C(O)c1ccccc1S(=O)(=O)Nc1ccc(F)cc1C(F)(F)F, CCOC(=O)[C@@H](N)[C@@H](C)O to produce CCOC(=O)C(NC(=O)c1ccccc1S(=O)(=O)Nc1ccc(F)cc1C(F)(F)F)C(C)O, please predict the agent for this reaction in SMILES notation in \boxed{$SMILES1, SMILES2, ...} format.