Using COCOC(C)C(O)Cn1c(-c2cccc(C)c2)cc(C(F)(F)F)c(C#N)c1=O to produce COCOC(C)C(=O)Cn1c(-c2cccc(C)c2)cc(C(F)(F)F)c(C#N)c1=O, please predict the agent for this reaction in SMILES notation in \boxed{$SMILES1, SMILES2, ...} format.