Using C[C@@H]1SCc2ncnc(N3CCNCC3)c21, O=C(O)C(CN1CCCC1)c1ccc(Cl)cc1 to produce C[C@@H]1SCc2ncnc(N3CCN(C(=O)C(CN4CCCC4)c4ccc(Cl)cc4)CC3)c21, please predict the agent for this reaction in SMILES notation in \boxed{$SMILES1, SMILES2, ...} format.