Using O=C1CCC(=O)N1Br, Cc1ccc(S(=O)(=O)n2ccc3c(C#C[Si](C)(C)C)c(C)cc(Br)c32)cc1 to produce Cc1ccc(S(=O)(=O)n2ccc3c(C#CBr)c(C)cc(Br)c32)cc1, please predict the agent for this reaction in SMILES notation in \boxed{$SMILES1, SMILES2, ...} format.