Using CCOC(=O)C[C@H](CCOc1ccc(Cl)cc1)NC(=O)C1(C[C@@H](CCOC)C(=O)O)CCCC1 to produce COCC[C@H](CC1(C(=O)N[C@@H](CCOc2ccc(Cl)cc2)CC(=O)O)CCCC1)C(=O)O, please predict the agent for this reaction in SMILES notation in \boxed{$SMILES1, SMILES2, ...} format.