You are a chemist. Please follow the instructions to convert the structure to the corresponding name.
system
3-[(5E)-2,4-dioxo-5-(thiophen-2-ylmethylidene)-1,3-thiazolidin-3-yl]-N-[4-(1,3-thiazol-2-ylsulfamoyl)phenyl]propanamide The above is the IUPAC name of a molecule. Write its molecular formula.
user
C20H16N4O5S4
assistant