Using COC(=O)CC(=O)OC, CS(=O)(=O)OCC1COc2ccc(F)cc21 to produce COC(=O)C(CC1COc2ccc(F)cc21)C(=O)OC, please predict the solvent for this reaction in SMILES notation in \boxed{$SMILES1, SMILES2, ...} format.