Using O=C(NC1CCN(CCc2ccccc2[N+](=O)[O-])CC1)c1ccccc1 to produce Nc1ccccc1CCN1CCC(NC(=O)c2ccccc2)CC1, please predict the agent for this reaction in SMILES notation in \boxed{$SMILES1, SMILES2, ...} format.