You are a chemist. Please follow the instructions to convert the structure to the corresponding name.
system
Provide the molecular formula for the IUPAC named substance (E)-3-[5-chloro-3-methyl-1-(2-methylpropyl)pyrazol-4-yl]-2-cyano-N-(4-sulfamoylphenyl)prop-2-enamide .
user
C18H20ClN5O3S
assistant