Using COC(=O)c1cc(NC(=O)CCCCCl)cc([N+](=O)[O-])c1 to produce COC(=O)c1cc(N2CCCCC2=O)cc([N+](=O)[O-])c1, please predict the agent for this reaction in SMILES notation in \boxed{$SMILES1, SMILES2, ...} format.