Using COC(=O)C1C(=O)CC(=O)CC1CCSc1ccc(C(F)(F)F)cc1 to produce O=C1CC(=O)CC(CCSc2ccc(C(F)(F)F)cc2)C1, please predict the solvent for this reaction in SMILES notation in \boxed{$SMILES1, SMILES2, ...} format.