Using COC(=O)C1CN(C(=O)OC(C)(C)C)CCC1c1ccc(OCCOc2c(Cl)cc(C)cc2Cl)cc1 to produce COC(=O)[C@H]1CN(C(=O)OC(C)(C)C)CC[C@@H]1c1ccc(OCCOc2c(Cl)cc(C)cc2Cl)cc1, please predict the agent for this reaction in SMILES notation in \boxed{$SMILES1, SMILES2, ...} format.