Using CCCC[Sn](Cl)(CCCC)CCCC, CCCCCCCCCCOc1cscc1OCCCCCCCCCC to produce CCCCCCCCCCOc1csc([Sn](CCCC)(CCCC)CCCC)c1OCCCCCCCCCC, please predict the agent for this reaction in SMILES notation in \boxed{$SMILES1, SMILES2, ...} format.