Using CC(C)(C)OC(=O)N[C@H]1CCCN(c2c([N+](=O)[O-])cnc3ccccc23)C1 to produce CC(C)(C)OC(=O)N[C@H]1CCCN(c2c(N)cnc3ccccc23)C1, please predict the agent for this reaction in SMILES notation in \boxed{$SMILES1, SMILES2, ...} format.