Using COc1cc(C(=O)Oc2ccccc2C(C)=O)cc([N+](=O)[O-])c1OC to produce COc1cc(-c2cc(=O)c3ccccc3o2)cc([N+](=O)[O-])c1OC, please predict the agent for this reaction in SMILES notation in \boxed{$SMILES1, SMILES2, ...} format.