Using Cc1cc(CC(CC(=O)OC(C)(C)C)c2ccccn2)cc2cn[nH]c12 to produce Cc1cc(CC(CC(=O)O)c2ccccn2)cc2cn[nH]c12, please predict the agent for this reaction in SMILES notation in \boxed{$SMILES1, SMILES2, ...} format.