Using COc1ccc(C(C)=O)c2c1CCCC2, O=[N+]([O-])O to produce COc1c([N+](=O)[O-])cc(C(C)=O)c2c1CCCC2, please predict the agent for this reaction in SMILES notation in \boxed{$SMILES1, SMILES2, ...} format.