Using CCCC[Sn](CCCC)(CCCC)c1cccnc1F, CCNc1ncccc1-c1cscc1Br to produce CCNc1ncccc1-c1cscc1-c1cccnc1F, please predict the solvent for this reaction in SMILES notation in \boxed{$SMILES1, SMILES2, ...} format.