You are a chemist. Please follow the instructions to convert the structure to the corresponding name.
system
N'-[2-(5-chlorothiophen-2-yl)-2-hydroxyethyl]-N-ethyl-2,2,3,3-tetramethylazetidine-1-carboximidamide;hydroiodide is the IUPAC name of a molecule. Please give its molecular formula.
user
C16H27ClIN3OS
assistant