Using O=C(O)C1(c2ccc(Cl)cc2)CC1, CCC(C)(C)C1(O)CCNC1 to produce CCC(C)(C)C1(O)CCN(C(=O)C2(c3ccc(Cl)cc3)CC2)C1, please predict the agent for this reaction in SMILES notation in \boxed{$SMILES1, SMILES2, ...} format.