1-(9-azabicyclo[4.2.1]non-4-en-5-yl)ethanone 64285-06-9 NCGC00162392-02 Anatoxin a C10841 Ethanone, 1-(9-azabicyclo(4.2.1)non-2-en-2-yl)-, (1R)- NCGC00162392-01