Using COC(=O)c1c(N)c(Br)cc2cn[nH]c12, C#C[Si](C)(C)C to produce COC(=O)c1c(N)c(C#C[Si](C)(C)C)cc2cn[nH]c12, please predict the agent for this reaction in SMILES notation in \boxed{$SMILES1, SMILES2, ...} format.