You are a chemist. Please follow the instructions to convert the structure to the corresponding name.
system
2-[2-(heptadecylcarbamoyloxy)ethoxy]ethyl N-[(1-ethylpyridin-1-ium-2-yl)methyl]carbamate;iodide is the IUPAC name of a molecule. Please give its molecular formula.
user
C31H56IN3O5
assistant