Using CCCC[Sn](Cl)(CCCC)CCCC, COc1ccc(Oc2nccs2)cc1 to produce CCCC[Sn](CCCC)(CCCC)c1cnc(Oc2ccc(OC)cc2)s1, please predict the solvent for this reaction in SMILES notation in \boxed{$SMILES1, SMILES2, ...} format.