Using CCOP(=O)(CC(=O)OC(C)(C)C)OCC, O=C1CCC(F)(F)CC1 to produce CC(C)(C)OC(=O)C=C1CCC(F)(F)CC1, please predict the solvent for this reaction in SMILES notation in \boxed{$SMILES1, SMILES2, ...} format.