Using COc1nnc(-c2ccncc2)cc1-c1cc2ccc(C(C)O)cc2n1C(=O)OC(C)(C)C to produce COc1nnc(-c2ccncc2)cc1-c1cc2ccc(C(C)=O)cc2n1C(=O)OC(C)(C)C, please predict the agent for this reaction in SMILES notation in \boxed{$SMILES1, SMILES2, ...} format.