Using C[Sn](C)(C)c1ccc(C#N)cn1, N#Cc1cccc(-c2ccc(Br)o2)c1 to produce N#Cc1ccc(-c2ccc(-c3cccc(C#N)c3)o2)nc1, please predict the agent for this reaction in SMILES notation in \boxed{$SMILES1, SMILES2, ...} format.