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