You are a chemist. Please follow the instructions to convert the structure to the corresponding name.
system
Translate the chemical IUPAC name 2-[5-(2-chlorophenyl)-4-oxo-3-prop-2-enylthieno[2,3-d]pyrimidin-2-yl]sulfanyl-N-(3-methoxyphenyl)acetamide into its molecular formula.
user
C24H20ClN3O3S2
assistant