You are a chemist. Please follow the instructions to convert the structure to the corresponding name.
system
Under IUPAC nomenclature, a molecule named 1-(5-chlorothiophen-2-yl)sulfonyl-3-[3-fluoro-4-[6-(methylamino)-4-nitro-1,3-dioxo-4H-isoquinolin-2-yl]phenyl]urea is given. What is its corresponding molecular formula?
user
C21H15ClFN5O7S2
assistant