Using CSc1ccc(C(=O)C(C(=O)OC(C)(C)C)C(=O)C2CC2)c2c1OC(F)(F)O2 to produce CSc1ccc(C(=O)CC(=O)C2CC2)c2c1OC(F)(F)O2, please predict the solvent for this reaction in SMILES notation in \boxed{$SMILES1, SMILES2, ...} format.