Using CCCC[Sn](CCCC)(CCCC)c1ccccn1, O=[N+]([O-])c1ccc(F)c(Br)c1F to produce O=[N+]([O-])c1ccc(F)c(-c2ccccn2)c1F, please predict the solvent for this reaction in SMILES notation in \boxed{$SMILES1, SMILES2, ...} format.