(+)-(1S,5R,6S)-exo-3-(2-(6-(4-fluorophenyl)-3-aza-bicyclo(3.2.0)heptan-3-yl)ethyl)-1H,3H-quinazoline-2,4-dione fumarate
(+)-(1s,5r,6s)-exo-3-(2-(6-(4-fluorophenyl)-3-aza-bicyclo(3.2.0)heptan-3-yl)ethyl)-1h,3h-quinazoline-2,4-dione fumarate