Using CCOC(=O)c1cnc(Nc2cccc(C(F)(F)F)c2)[nH]c1=O to produce O=C(O)c1cnc(Nc2cccc(C(F)(F)F)c2)[nH]c1=O, please predict the agent for this reaction in SMILES notation in \boxed{$SMILES1, SMILES2, ...} format.