You are a chemist. Please follow the instructions to convert the structure to the corresponding name.
system
Please write the molecular formula of the molecule 1-(3,4-dihydro-2H-1,5-benzodioxepin-7-yl)-3-(2-methoxy-3,3-dimethylbutyl)-2-methylguanidine;hydroiodide .
user
C18H30IN3O3
assistant