Using CC(=O)C(=Cc1cccc([N+](=O)[O-])c1)C(=O)OC(C)C, COC(=N)N to produce COC1=NC(c2cccc([N+](=O)[O-])c2)C(C(=O)OC(C)C)=C(C)N1, please predict the agent for this reaction in SMILES notation in \boxed{$SMILES1, SMILES2, ...} format.