Using Cc1nc(-c2ccncc2)sc1C(=O)N1CCN(C(=O)OC(C)(C)C)CC1 to produce Cc1nc(-c2ccncc2)sc1C(=O)N1CCNCC1, please predict the agent for this reaction in SMILES notation in \boxed{$SMILES1, SMILES2, ...} format.