You are a chemist. Please follow the instructions to convert the structure to the corresponding name.
system
Convert the IUPAC name of a molecule N-butan-2-yl-2-[3-(3,4-dichlorophenyl)-2,4-dioxo-5,6,7,8-tetrahydro-[1]benzothiolo[2,3-d]pyrimidin-1-yl]acetamide into molecular formula.
user
C22H23Cl2N3O3S
assistant