Using CCOC(=O)CC(=O)C(F)(F)F, CC1CCN(C)c2nc(O)ccc21 to produce CC1CCN(C)c2nc3oc(=O)cc(C(F)(F)F)c3cc21, please predict the agent for this reaction in SMILES notation in \boxed{$SMILES1, SMILES2, ...} format.