Using O=C(Cl)OCC(Cl)(Cl)Cl, CC(C)(C)c1ccccc1N1CCNCC1 to produce CC(C)(C)c1ccccc1N1CCN(C(=O)OCC(Cl)(Cl)Cl)CC1, please predict the agent for this reaction in SMILES notation in \boxed{$SMILES1, SMILES2, ...} format.