Using CCc1nc(C)c[nH]1, O=C(Cl)c1c(Cl)cccc1[N+](=O)[O-] to produce CCc1nc(C)cn1C(=O)c1c(Cl)cccc1[N+](=O)[O-], please predict the agent for this reaction in SMILES notation in \boxed{$SMILES1, SMILES2, ...} format.