Using O=Cc1ccc(O)cc1, Nc1cc(F)cc(F)c1[N+](=O)[O-] to produce Nc1cc(Oc2ccc(C=O)cc2)cc(F)c1[N+](=O)[O-], please predict the agent for this reaction in SMILES notation in \boxed{$SMILES1, SMILES2, ...} format.