Using O=C(O)C(c1cccc(Cl)c1)C1(O)CCCCC1, CC(C)(C)OC(=O)N1CCNCC1 to produce CC(C)(C)OC(=O)N1CCN(C(=O)C(c2cccc(Cl)c2)C2(O)CCCCC2)CC1, please predict the agent for this reaction in SMILES notation in \boxed{$SMILES1, SMILES2, ...} format.