Using [BH3-]C#N, COCCN[C@@H]1CCc2nc(NC(=O)c3cccc(Cn4cc(-c5ccc(C#N)cc5)nn4)c3)sc2C1 to produce COCCN(C)[C@@H]1CCc2nc(NC(=O)c3cccc(Cn4cc(-c5ccc(C#N)cc5)nn4)c3)sc2C1, please predict the agent for this reaction in SMILES notation in \boxed{$SMILES1, SMILES2, ...} format.