Using O=[N+]([O-])c1cc(F)c(F)c(F)c1, CCOC(=O)C(C)C#N to produce CCOC(=O)C(C)(C#N)c1c(F)cc([N+](=O)[O-])cc1F, please predict the agent for this reaction in SMILES notation in \boxed{$SMILES1, SMILES2, ...} format.