Using NO, CCOCCOC(=O)C1=C(C)NC(C=O)=C(C(=O)OCC)C1c1cccc([N+](=O)[O-])c1 to produce CCOCCOC(=O)C1=C(C)NC(C#N)=C(C(=O)OCC)C1c1cccc([N+](=O)[O-])c1, please predict the agent for this reaction in SMILES notation in \boxed{$SMILES1, SMILES2, ...} format.