Using COC(=O)Cc1csc2cc(OC(=O)C(C)(C)C)cc(C(=O)N(C)C)c12 to produce COC(=O)Cc1csc2cc(O)cc(C(=O)N(C)C)c12, please predict the agent for this reaction in SMILES notation in \boxed{$SMILES1, SMILES2, ...} format.