Using Nc1nc(S)nc2c1nc(O)n2Cc1ccccc1, FC(F)(F)CI to produce Nc1nc(SCC(F)(F)F)nc2c1nc(O)n2Cc1ccccc1, please predict the solvent for this reaction in SMILES notation in \boxed{$SMILES1, SMILES2, ...} format.