You are a chemist. Please follow the instructions to convert the structure to the corresponding name.
system
[2-oxo-2-(thiophen-2-ylmethylamino)ethyl] 3-[methyl(propan-2-yl)sulfamoyl]benzoate The above is the IUPAC name of a molecule. Write its molecular formula.
user
C18H22N2O5S2
assistant