Using O=C1CCC(=O)N1Cl, COC(=O)c1cccn1Cc1ccccc1[N+](=O)[O-] to produce COC(=O)c1ccc(Cl)n1Cc1ccccc1[N+](=O)[O-], please predict the agent for this reaction in SMILES notation in \boxed{$SMILES1, SMILES2, ...} format.