Using CCCC[Sn](CCCC)(CCCC)c1ccccn1, N#Cc1cc(Br)cc(-c2nc(-c3ccccn3)no2)c1 to produce N#Cc1cc(-c2ccccn2)cc(-c2nc(-c3ccccn3)no2)c1, please predict the agent for this reaction in SMILES notation in \boxed{$SMILES1, SMILES2, ...} format.