Using OB(O)c1cccnc1F, O=Cc1cc(Br)n(S(=O)(=O)c2ccccc2)c1 to produce O=Cc1cc(-c2cccnc2F)n(S(=O)(=O)c2ccccc2)c1, please predict the solvent for this reaction in SMILES notation in \boxed{$SMILES1, SMILES2, ...} format.