Using CCCC[Sn](Cl)(CCCC)CCCC, CSc1nc(I)c2ccc(F)cn12 to produce CCCC[Sn](CCCC)(CCCC)c1nc(SC)n2cc(F)ccc12, please predict the solvent for this reaction in SMILES notation in \boxed{$SMILES1, SMILES2, ...} format.