Using C#C[Si](C)(C)C, COc1ccc(Cn2nc(Br)nc2N2CCCC2)cc1 to produce COc1ccc(Cn2nc(C#C[Si](C)(C)C)nc2N2CCCC2)cc1, please predict the agent for this reaction in SMILES notation in \boxed{$SMILES1, SMILES2, ...} format.