You are a chemist. Please follow the instructions to convert the structure to the corresponding name.
system
Under IUPAC nomenclature, a molecule named N-methyl-N-[2-[(4-nitrophenyl)sulfonylamino]ethyl]-N'-(4-propan-2-ylphenyl)ethanimidamide;hydroiodide is given. What is its corresponding molecular formula?
user
C20H27IN4O4S
assistant