Using COC(=O)C1CC(CCCC(C)(F)F)CN1C(=O)OC(C)(C)C to produce CC(F)(F)CCCC1CC(C(=O)O)N(C(=O)OC(C)(C)C)C1, please predict the agent for this reaction in SMILES notation in \boxed{$SMILES1, SMILES2, ...} format.