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 identified by 2-methyl-1-(2-piperidin-1-ylethyl)-3-[[1-(thiophen-2-ylmethyl)piperidin-4-yl]methyl]guanidine;hydroiodide ?
user
C20H36IN5S
assistant