Using CCCC[Sn](CCCC)(CCCC)c1cnccn1, Brc1cccc(C#Cc2ccncc2)c1 to produce C(#Cc1cccc(-c2cnccn2)c1)c1ccncc1, please predict the agent for this reaction in SMILES notation in \boxed{$SMILES1, SMILES2, ...} format.