Using CCOC(=O)C(F)(F)F, O=C1CCSc2c1ccc(Cl)c2Cl to produce O=C1c2ccc(Cl)c(Cl)c2SCC1C(=O)C(F)(F)F, please predict the solvent for this reaction in SMILES notation in \boxed{$SMILES1, SMILES2, ...} format.