Using C[C@@H]1CCC[C@H](C)N1, O=C(Nc1cc(Cl)cnc1N1CCC(C(=O)O)CC1)c1cccc(Cl)c1 to produce C[C@@H]1CCC[C@H](C)N1C(=O)C1CCN(c2ncc(Cl)cc2NC(=O)c2cccc(Cl)c2)CC1, please predict the agent for this reaction in SMILES notation in \boxed{$SMILES1, SMILES2, ...} format.