You are a chemist. Please follow the instructions to convert the structure to the corresponding name.
system
Can you give the molecular formula of the molecule 1-[2-(4-methoxypiperidin-1-yl)-2-methylpropyl]-2-methyl-3-(9-methyl-9-azabicyclo[3.3.1]nonan-3-yl)guanidine;hydroiodide ?
user
C21H42IN5O
assistant