Using COC(=O)c1cc(C(=O)OC)cc(C(O)C[N+](=O)[O-])c1 to produce COC(=O)c1cc(C=C[N+](=O)[O-])cc(C(=O)OC)c1, please predict the agent for this reaction in SMILES notation in \boxed{$SMILES1, SMILES2, ...} format.