Using CC1(C)NC(=O)c2sc(Br)cc2N1, CCCC[Sn](CCCC)(CCCC)c1ccnc(S(C)(=O)=O)n1 to produce CC1(C)NC(=O)c2sc(-c3ccnc(S(C)(=O)=O)n3)cc2N1, please predict the agent for this reaction in SMILES notation in \boxed{$SMILES1, SMILES2, ...} format.