(1R)-1-(9-Azabicyclo(4.2.1)non-2-en-2-yl)-1-propanone 1-Propanone, 1-(9-azabicyclo(4.2.1)non-2-en-2-yl)-, (1R)- 142926-86-1 2-(Propan-1-oxo-1-yl)-9-azabicyclo(4.2.1)non-2-ene Homoanatoxin Homoantx