Using C[C@H](CCNCN=N[N+](=O)[O-])[C@H](NC(=O)OC(C)(C)C)C(=O)Nc1nccs1 to produce C[C@H](CCNCN=N[N+](=O)[O-])[C@H](N)C(=O)Nc1nccs1, please predict the agent for this reaction in SMILES notation in \boxed{$SMILES1, SMILES2, ...} format.