Using CC(=O)NCCNC(=O)c1ccc(-c2ncc(Br)c(Nc3cc(C4CC4)n(C(C)=O)n3)n2)s1, C#C[Si](C)(C)C to produce CC(=O)NCCNC(=O)c1ccc(-c2ncc(C#C[Si](C)(C)C)c(Nc3cc(C4CC4)n(C(C)=O)n3)n2)s1, please predict the agent for this reaction in SMILES notation in \boxed{$SMILES1, SMILES2, ...} format.