Using FC(F)(F)I, Fc1ccc(-c2cnc(S)nc2-c2ccc(F)cc2)cc1 to produce Fc1ccc(-c2cnc(SC(F)(F)F)nc2-c2ccc(F)cc2)cc1, please predict the solvent for this reaction in SMILES notation in \boxed{$SMILES1, SMILES2, ...} format.