Using O=C(OCCN1CCN(c2cccc(Cl)c2)CC1)c1ccccc1[N+](=O)[O-] to produce Nc1ccccc1C(=O)OCCN1CCN(c2cccc(Cl)c2)CC1, please predict the agent for this reaction in SMILES notation in \boxed{$SMILES1, SMILES2, ...} format.