Using CCCC[Sn](Cl)(CCCC)CCCC, COCc1csc(NC(=O)OC(C)(C)C)n1 to produce CCCC[Sn](CCCC)(CCCC)c1sc(NC(=O)OC(C)(C)C)nc1COC, please predict the solvent for this reaction in SMILES notation in \boxed{$SMILES1, SMILES2, ...} format.