Using O=S(=O)(OCC(F)(F)F)C(F)(F)F, Oc1cnc2c(Cl)ccnc2c1 to produce FC(F)(F)COc1cnc2c(Cl)ccnc2c1, please predict the solvent for this reaction in SMILES notation in \boxed{$SMILES1, SMILES2, ...} format.