Using CCn1c(C)nc2cc(C(F)(F)F)c(Cl)cc21, O=[N+]([O-])O to produce CCn1c(C)nc2cc(C(F)(F)F)c(Cl)c([N+](=O)[O-])c21, please predict the agent for this reaction in SMILES notation in \boxed{$SMILES1, SMILES2, ...} format.