Using CCOC(=O)C(=O)OCC, Cc1ccc(C#N)cc1[N+](=O)[O-] to produce CCOC(=O)C(=O)Cc1ccc(C#N)cc1[N+](=O)[O-], please predict the agent for this reaction in SMILES notation in \boxed{$SMILES1, SMILES2, ...} format.