Using CCOC(=O)c1cc(C(F)(F)F)cn1Cc1cc(Cl)ccc1[N+](=O)[O-] to produce O=C1Nc2ccc(Cl)cc2Cn2cc(C(F)(F)F)cc21, please predict the agent for this reaction in SMILES notation in \boxed{$SMILES1, SMILES2, ...} format.