You are a chemist. Please follow the instructions to convert the structure to the corresponding name.
system
3-(1,3-dioxoisoindol-2-yl)-N-[4-(1,3-thiazol-2-ylsulfamoyl)phenyl]propanamide is the IUPAC name of a molecule. Please give its molecular formula.
user
C20H16N4O5S2
assistant