Using O=[N+]([O-])c1ccc2c(Br)n[nH]c2c1, CCCC[Sn](CCCC)(CCCC)c1cccc(F)c1 to produce O=[N+]([O-])c1ccc2c(-c3cccc(F)c3)n[nH]c2c1, please predict the solvent for this reaction in SMILES notation in \boxed{$SMILES1, SMILES2, ...} format.