73962-22-8 BUTYROPHENONE, 4'-FLUORO-4-(2-METHOXYSPIRO(BENZOFURAN-3(2H),4'-PIPERIDIN)-1'-YL) Butyrophenone, 4'-fluoro-4-(2-methoxyspiro(benzofuran-3(2H),4'-piperidin)-1'-yl)-, oxalate, hemihydrate