Using CC(C)(C)OC(=O)CN(C(=O)OC(C)(C)C)c1cccc(CO)n1 to produce CC(C)(C)OC(=O)CN(C(=O)OC(C)(C)C)c1cccc(C=O)n1, please predict the agent for this reaction in SMILES notation in \boxed{$SMILES1, SMILES2, ...} format.