Using O=C([O-])[O-], CC(C)(C)OC(=O)N1CCC(c2ccc(O)cc2)C(O)C1 to produce COc1ccc(C2CCN(C(=O)OC(C)(C)C)CC2O)cc1, please predict the agent for this reaction in SMILES notation in \boxed{$SMILES1, SMILES2, ...} format.