Using Cc1c(C(=O)OCC2CCN(Cc3cnc(-c4ccccn4)s3)CC2)sc(NC(=O)OC(C)(C)C)c1C#N to produce Cc1c(C(=O)OCC2CCN(Cc3cnc(-c4ccccn4)s3)CC2)sc(N)c1C#N, please predict the agent for this reaction in SMILES notation in \boxed{$SMILES1, SMILES2, ...} format.