Using Cc1cc(-c2ccn(C[C@@H](C)N3C(=O)c4ccccc4C3=O)n2)ccc1C#N to produce Cc1cc(-c2ccn(C[C@@H](C)N)n2)ccc1C#N, please predict the agent for this reaction in SMILES notation in \boxed{$SMILES1, SMILES2, ...} format.