Using O=P(Cl)(Cl)Cl, Cc1c[n+]([O-])c(C)c(Cl)c1[N+](=O)[O-] to produce Cc1c[n+]([O-])c(C)c(Cl)c1Cl, please predict the agent for this reaction in SMILES notation in \boxed{$SMILES1, SMILES2, ...} format.