Using O=C(O)CN1CCN(c2ncc(Cl)cc2NC(=O)c2cccc(Cl)c2)CC1, C1CCNCC1 to produce O=C(Nc1cc(Cl)cnc1N1CCN(CC(=O)N2CCCCC2)CC1)c1cccc(Cl)c1, please predict the agent for this reaction in SMILES notation in \boxed{$SMILES1, SMILES2, ...} format.