You are a chemist. Please follow the instructions to convert the structure to the corresponding name.
system
2-[(8-bromo-5H-[1,2,4]triazino[5,6-b]indol-3-yl)sulfanyl]-N-[3-(4-methoxyphenyl)-2,6-dioxopyrimidin-4-yl]acetamide The above is the IUPAC name of a molecule. Write its molecular formula.
user
C22H16BrN7O4S
assistant