Using CC(C)(C)OC(=O)OC(=O)OC(C)(C)C, Nc1ccc(C(F)(F)F)cc1 to produce Nc1ccc(C(F)(F)F)cc1C(=O)O, please predict the solvent for this reaction in SMILES notation in \boxed{$SMILES1, SMILES2, ...} format.