Using CCOC(=O)C1CCN(CC2=CC[C@@H](c3ccc(Cl)cc3Cl)[C@H]([N+](=O)[O-])C2)CC1 to produce CCOC(=O)C1CCN(CC2=CC[C@@H](c3ccc(Cl)cc3Cl)[C@H](N)C2)CC1, please predict the agent for this reaction in SMILES notation in \boxed{$SMILES1, SMILES2, ...} format.