Using COC(=O)C(c1ccc([N+](=O)[O-])cc1[N+](=O)[O-])(C(F)(F)F)C(F)(F)F to produce Nc1ccc2c(c1)N(O)C(=O)C2(C(F)(F)F)C(F)(F)F, please predict the agent for this reaction in SMILES notation in \boxed{$SMILES1, SMILES2, ...} format.