Using CC(C)Nc1ncc(-c2cc(Br)c3nncn3c2)s1, OB(O)c1ccccc1F to produce CC(C)Nc1ncc(-c2cc(-c3ccccc3F)c3nncn3c2)s1, please predict the solvent for this reaction in SMILES notation in \boxed{$SMILES1, SMILES2, ...} format.