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 N-[3-[[(2S)-1-(1H-imidazol-5-yl)-3-oxopropan-2-yl]amino]-3-oxopropyl]-4-[(2-methylphenyl)sulfonylcarbamoylamino]butanamide .
user
C21H28N6O6S
assistant