Using CN1CCN(CC(=O)N2CCCc3ccc([N+](=O)[O-])cc32)CC1 to produce CN1CCN(CCN2CCCc3ccc([N+](=O)[O-])cc32)CC1, please predict the agent for this reaction in SMILES notation in \boxed{$SMILES1, SMILES2, ...} format.