Using NO, CCOC(=O)C(=O)CC(=O)c1ccc(C(C)(C)C)cc1 to produce CCOC(=O)c1cc(-c2ccc(C(C)(C)C)cc2)on1, please predict the agent for this reaction in SMILES notation in \boxed{$SMILES1, SMILES2, ...} format.