You are a chemist. Please follow the instructions to convert the structure to the corresponding name.
system
N-(3-acetamidophenyl)-2-chloro-5-(1,1,3-trioxo-1,2-thiazolidin-2-yl)benzamide is the IUPAC name of a molecule. Please give its molecular formula.
user
C18H16ClN3O5S
assistant