Using CCOC(=O)c1nnn2c1CCCc1cc(OC(F)(F)F)ccc1-2 to produce O=C(O)c1nnn2c1CCCc1cc(OC(F)(F)F)ccc1-2, please predict the agent for this reaction in SMILES notation in \boxed{$SMILES1, SMILES2, ...} format.