Using CC(C)(C)OC(=O)Nc1scnc1Br, CCCC[Sn](CCCC)(CCCC)c1cscn1 to produce CC(C)(C)OC(=O)Nc1scnc1-c1cscn1, please predict the solvent for this reaction in SMILES notation in \boxed{$SMILES1, SMILES2, ...} format.