You are a chemist. Please follow the instructions to convert the structure to the corresponding name.
system
2-(4-chlorophenyl)sulfanyl-N-[3-(2-methoxyphenyl)-2,6-dioxopyrimidin-4-yl]acetamide is the IUPAC name of a molecule. Please give its molecular formula.
user
C19H16ClN3O4S
assistant