Using Fc1cccc(CBr)c1, CC1(C)Cc2ccccc2C1c1cncnc1S to produce CC1(C)Cc2ccccc2C1c1cncnc1SCc1cccc(F)c1, please predict the solvent for this reaction in SMILES notation in \boxed{$SMILES1, SMILES2, ...} format.