Using FC(F)(F)c1cc(Cl)ncn1, COc1nc(Cl)ncc1C=O to produce COc1nc(Cl)ncc1C(O)c1c(Cl)ncnc1C(F)(F)F, please predict the solvent for this reaction in SMILES notation in \boxed{$SMILES1, SMILES2, ...} format.