You are a chemist. Please follow the instructions to convert the structure to the corresponding name.
system
Translate the chemical IUPAC name N-[5-(dimethylsulfamoyl)-2-methylphenyl]-2-[(6-oxo-4-propyl-1H-pyrimidin-2-yl)sulfanyl]acetamide into its molecular formula.
user
C18H24N4O4S2
assistant