You are a chemist. Please follow the instructions to convert the structure to the corresponding name.
system
Translate the chemical IUPAC name 1-[[(4aS,6R,6aR,10bS)-2,3,4,4a,6,6a,7,8,9,10b-decahydro-1H-benzo[c]chromen-6-yl]methyl]-1-methylpiperidin-1-ium into its molecular formula.
user
C20H34NO+
assistant