Using CC(C)(C)OC(=O)NCC1CCN(c2cccc3ccc(C(O)CO)nc23)CC1 to produce CC(C)(C)OC(=O)NCC1CCN(c2cccc3ccc(C=O)nc23)CC1, please predict the agent for this reaction in SMILES notation in \boxed{$SMILES1, SMILES2, ...} format.