Using COc1ccc(C(=O)c2ccccc2)cc1O, CC(C)O[N+](=O)[O-] to produce COc1ccc(C(=O)c2ccccc2)c([N+](=O)[O-])c1O, please predict the agent for this reaction in SMILES notation in \boxed{$SMILES1, SMILES2, ...} format.