Using COc1ccc(F)c(F)c1COc1cc([N+](=O)[O-])c(Cl)cc1O, OCCF to produce COc1ccc(F)c(F)c1COc1cc([N+](=O)[O-])c(Cl)cc1OCCF, please predict the agent for this reaction in SMILES notation in \boxed{$SMILES1, SMILES2, ...} format.