You are a chemist. Please follow the instructions to convert the structure to the corresponding name.
system
What is the molecular formula of the molecule 2-methyl-1-[1-(2-methylpropanoyl)pyrrolidin-3-yl]-3-[2-(4-pyrimidin-2-ylpiperazin-1-yl)ethyl]guanidine;hydroiodide ?
user
C20H35IN8O
assistant