Using O=C(NC1CCN(Cc2ccccc2)CC1)c1c(Cl)cccc1[N+](=O)[O-] to produce Nc1cccc(Cl)c1CNC1CCN(Cc2ccccc2)CC1, please predict the agent for this reaction in SMILES notation in \boxed{$SMILES1, SMILES2, ...} format.