Using COc1ccc(C(C(F)(F)F)C(F)(F)F)cc1, COC(Cl)Cl to produce COc1ccc(C(C(F)(F)F)C(F)(F)F)cc1C=O, please predict the solvent for this reaction in SMILES notation in \boxed{$SMILES1, SMILES2, ...} format.