Using O=c1[nH]c2ccccc2n1CCCN1CCC(Nc2ccc(Cl)cc2[N+](=O)[O-])CC1 to produce Nc1cc(Cl)ccc1NC1CCN(CCCn2c(=O)[nH]c3ccccc32)CC1, please predict the agent for this reaction in SMILES notation in \boxed{$SMILES1, SMILES2, ...} format.