You are a chemist. Please follow the instructions to convert the structure to the corresponding name.
system
Provide the molecular formula for the IUPAC named substance 1-[(2-tert-butyloxan-3-yl)methyl]-2-methyl-3-[(1-propylpyrrolidin-3-yl)methyl]guanidine;hydroiodide .
user
C20H41IN4O
assistant