Using COC(=O)C1CC(NCc2cc(C(F)(F)F)cc(C(F)(F)F)c2)CN1Cc1ccccc1 to produce O=C(O)C1CC(NCc2cc(C(F)(F)F)cc(C(F)(F)F)c2)CN1Cc1ccccc1, please predict the agent for this reaction in SMILES notation in \boxed{$SMILES1, SMILES2, ...} format.