Using O=N[O-], CCOC(=O)C=C1CN=C(c2ccccc2F)c2cc(Cl)ccc2N1 to produce CCOC(=O)C(=NO)C1=Nc2ccc(Cl)cc2C(c2ccccc2F)=NC1, please predict the agent for this reaction in SMILES notation in \boxed{$SMILES1, SMILES2, ...} format.