Using O=c1ccc(-c2ccc([N+](=O)[O-])c(C(F)(F)F)c2)n[nH]1 to produce Nc1ccc(-c2ccc(=O)[nH]n2)cc1C(F)(F)F, please predict the agent for this reaction in SMILES notation in \boxed{$SMILES1, SMILES2, ...} format.