Using COC(=O)c1cc(OCc2ccccc2)c2nc(C)n(C(=O)OC(C)(C)C)c2c1 to produce COC(=O)c1cc(O)c2nc(C)n(C(=O)OC(C)(C)C)c2c1, please predict the agent for this reaction in SMILES notation in \boxed{$SMILES1, SMILES2, ...} format.