Using Nc1cccnc1Br, C#C[C@@H](CO[Si](c1ccccc1)(c1ccccc1)C(C)(C)C)NC(=O)OC(C)(C)C to produce CC(C)(C)OC(=O)N[C@@H](C#Cc1ncccc1N)CO[Si](c1ccccc1)(c1ccccc1)C(C)(C)C, please predict the agent for this reaction in SMILES notation in \boxed{$SMILES1, SMILES2, ...} format.