Using CNc1cc(F)c(C(=O)Nc2ccc(F)c(Cl)c2)cc1[N+](=O)[O-], OCCF to produce CNc1cc(OCCF)c(C(=O)Nc2ccc(F)c(Cl)c2)cc1[N+](=O)[O-], please predict the agent for this reaction in SMILES notation in \boxed{$SMILES1, SMILES2, ...} format.