Using C[C@@H]1C[C@H](NC(=O)OC(C)(C)C)CN(c2c([N+](=O)[O-])cnc3c2CCO3)C1 to produce C[C@@H]1C[C@H](NC(=O)OC(C)(C)C)CN(c2c(N)cnc3c2CCO3)C1, please predict the agent for this reaction in SMILES notation in \boxed{$SMILES1, SMILES2, ...} format.