Using O=[N+]([O-])c1ccc(-c2c(F)c(F)c(F)c(F)c2F)cc1 to produce Nc1ccc(-c2c(F)c(F)c(F)c(F)c2F)cc1, please predict the agent for this reaction in SMILES notation in \boxed{$SMILES1, SMILES2, ...} format.