Using O=C1CCN(Cc2ccc(Cl)c(Cl)c2)CC1, CC(C)(C)OC(=O)NCCN to produce CC(C)(C)OC(=O)NCCNC1CCN(Cc2ccc(Cl)c(Cl)c2)CC1, please predict the agent for this reaction in SMILES notation in \boxed{$SMILES1, SMILES2, ...} format.