Using CCCC[N+](CCCC)(CCCC)CCCC, Nc1cc(Cl)cc([N+](=O)[O-])c1C(=O)O to produce COC(=O)c1c(N)cc(Cl)cc1[N+](=O)[O-], please predict the agent for this reaction in SMILES notation in \boxed{$SMILES1, SMILES2, ...} format.