Using COC(=O)C(=O)c1cn(C)c2cc(-c3ccc(OC(F)(F)F)cc3)ccc12 to produce Cn1cc(C(=O)C(=O)O)c2ccc(-c3ccc(OC(F)(F)F)cc3)cc21, please predict the solvent for this reaction in SMILES notation in \boxed{$SMILES1, SMILES2, ...} format.