((1S,3S,4S)-3-Bromo-7,7-dimethyl-2-oxobicyclo[2.2.1]heptan-1-yl)methanesulfonic acid hydrate

((1S,3S,4S)-3-Bromo-7,7-dimethyl-2-oxobicyclo[2.2.1]heptan-1-yl)methanesulfonic acid hydrate