You are a chemist. Please follow the instructions to convert the structure to the corresponding name.
system
Translate the chemical IUPAC name 1-(2,3,4,4a,5,6,7,8,9,9a-decahydro-1H-benzo[7]annulen-5-yl)-4-(3,5-dimethylpiperidin-1-yl)butane-1,4-dione into its molecular formula.
user
C22H37NO2
assistant