Using Cc1cc(C#N)ccc1S(=O)(=O)N1CCN(C(=O)OC(C)(C)C)[C@@H](C)C1 to produce Cc1cc(C#N)ccc1S(=O)(=O)N1CCN[C@@H](C)C1, please predict the agent for this reaction in SMILES notation in \boxed{$SMILES1, SMILES2, ...} format.