Using CN1C(=O)CCc2cc(-c3cncc(O[C@H]4CCNC4)c3)ccc21, O=C(Cl)C1CC1 to produce CN1C(=O)CCc2cc(-c3cncc(O[C@H]4CCN(C(=O)C5CC5)C4)c3)ccc21, please predict the agent for this reaction in SMILES notation in \boxed{$SMILES1, SMILES2, ...} format.