Using Oc1cccc(C(F)(F)F)c1, COC(=O)c1cc(Cl)cc(Cl)n1 to produce O=C(O)c1cc(Cl)cc(Oc2cccc(C(F)(F)F)c2)n1, please predict the solvent for this reaction in SMILES notation in \boxed{$SMILES1, SMILES2, ...} format.