Using CC(C)(C)OC(=O)NCc1ccc(Cl)cc1CNC(=O)[C@@H]1CCCN1, CCC(O)(CC)C(=O)O to produce CCC(O)(CC)C(=O)N1CCC[C@H]1C(=O)NCc1cc(Cl)ccc1CNC(=O)OC(C)(C)C, please predict the agent for this reaction in SMILES notation in \boxed{$SMILES1, SMILES2, ...} format.