Using O=[N+]([O-])c1ccc(O)cc1, COc1ccccc1C(=C/C=C/C(=O)O)c1ccccc1OC to produce COc1ccccc1C(=C/C=C/C(=O)Oc1ccc([N+](=O)[O-])cc1)c1ccccc1OC, please predict the agent for this reaction in SMILES notation in \boxed{$SMILES1, SMILES2, ...} format.