(1S,4R,6S)-6-bromo-4,7,7-trimethyl-2-azabicyclo[2.2.1]-5-hepten-3-one

(1S,4R)-2-[(3'R,4'R,5'S,6'R)-5'-methylbicyclo[2.2.1]heptene-4'-carbonyl]-4,7,7-trimethyl-2-azabicyclo[2.2.1]-5-hepten-3-one