Using O=N[O-], COC(=O)c1nc(-c2ccc(Cl)c(OC)c2F)nc(N)c1OC to produce COC(=O)c1nc(-c2ccc(Cl)c(OC)c2F)nc(O)c1OC, please predict the agent for this reaction in SMILES notation in \boxed{$SMILES1, SMILES2, ...} format.