Using O=[N+]([O-])c1cccc(Cl)c1F, COC(=O)CC(C)=O to produce COC(=O)/C(=C(\C)O)c1c(Cl)cccc1[N+](=O)[O-], please predict the agent for this reaction in SMILES notation in \boxed{$SMILES1, SMILES2, ...} format.