Using CCCC[Sn](CCCC)(CCCC)c1ccncc1, Fc1cc(Br)cc(OCc2ccccc2)c1 to produce Fc1cc(OCc2ccccc2)cc(-c2ccncc2)c1, please predict the solvent for this reaction in SMILES notation in \boxed{$SMILES1, SMILES2, ...} format.