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