You are a chemist. Please follow the instructions to convert the structure to the corresponding name.
system
N-(2,3-dihydro-1,4-benzodioxin-6-yl)-2-[[3-(3,5-dimethylphenyl)-4-oxo-5H-pyrimido[5,4-b]indol-2-yl]sulfanyl]acetamide The above is the IUPAC name of a molecule. Write its molecular formula.
user
C28H24N4O4S
assistant