Using O=Cc1cccc(Cl)c1Cl, CC(C)CN[C@H]1CCN(C(=O)OC(C)(C)C)C1 to produce CC(C)CN(Cc1cccc(Cl)c1Cl)[C@H]1CCN(C(=O)OC(C)(C)C)C1, please predict the agent for this reaction in SMILES notation in \boxed{$SMILES1, SMILES2, ...} format.