You are a chemist. Please follow the instructions to convert the structure to the corresponding name.
system
3-[2-[[N-[2-(1,1-dioxo-1,2-thiazolidin-2-yl)ethyl]-N'-methylcarbamimidoyl]amino]ethyl]-N,N-dimethylbenzamide;hydroiodide is the IUPAC name of a molecule. Please give its molecular formula.
user
C18H30IN5O3S
assistant