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-[2-[4-(2-methylpropylcarbamoylsulfamoyl)phenyl]ethyl]-3-oxo-1H-isoindole-2-carboxamide into molecular formula.
user
C22H26N4O5S
assistant