You are a chemist. Please follow the instructions to convert the structure to the corresponding name.
system
Under IUPAC nomenclature, a molecule named N-[6-(2-chloro-4,6-dimethylanilino)pyridazin-3-yl]thiophene-2-sulfonamide is given. What is its corresponding molecular formula?
user
C16H15ClN4O2S2
assistant