Using CCOC(=O)C(=O)N1CCN(c2ccc(Cl)cc2C(C)(C)C)CC1 to produce CC(C)(C)c1cc(Cl)ccc1N1CCN(C(=O)C(=O)O)CC1, please predict the agent for this reaction in SMILES notation in \boxed{$SMILES1, SMILES2, ...} format.