Using CCOC(=O)C(c1ccccc1C)N1CCN(C(=O)OC(C)(C)C)CC1 to produce Cc1ccccc1C(C(=O)O)N1CCN(C(=O)OC(C)(C)C)CC1, please predict the agent for this reaction in SMILES notation in \boxed{$SMILES1, SMILES2, ...} format.