Using O=CC1(c2ccc(OC(F)(F)F)cc2)CC1, COC(=O)C(F)(Cl)Cl to produce COC(=O)C(F)=CC1(c2ccc(OC(F)(F)F)cc2)CC1, please predict the solvent for this reaction in SMILES notation in \boxed{$SMILES1, SMILES2, ...} format.