Using CCOC(=O)[C@H]1CCCN(CC2=CC[C@@H](c3ccc(Cl)cc3Cl)[C@H]([N+](=O)[O-])C2)C1 to produce CCOC(=O)[C@H]1CCCN(CC2=CC[C@@H](c3ccc(Cl)cc3Cl)[C@H](N)C2)C1, please predict the agent for this reaction in SMILES notation in \boxed{$SMILES1, SMILES2, ...} format.