Using O=C(Cl)CCl, CNCC(O)C(Oc1ccccc1[N+](=O)[O-])c1ccccc1 to produce CN(CC(O)C(Oc1ccccc1[N+](=O)[O-])c1ccccc1)C(=O)CCl, please predict the agent for this reaction in SMILES notation in \boxed{$SMILES1, SMILES2, ...} format.