Using COC(=O)c1ccc(-c2cc(C(F)(F)F)ccc2C=O)cc1 to produce O=Cc1ccc(C(F)(F)F)cc1-c1ccc(C(=O)O)cc1, please predict the solvent for this reaction in SMILES notation in \boxed{$SMILES1, SMILES2, ...} format.