Using CCCC[Sn](Cl)(CCCC)CCCC, c1csc(CN2CCCCC2)n1 to produce CCCC[Sn](CCCC)(CCCC)c1cnc(CN2CCCCC2)s1, please predict the agent for this reaction in SMILES notation in \boxed{$SMILES1, SMILES2, ...} format.