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 (2S)-2-[(4-methoxyphenyl)sulfonylamino]-3-[3-(3-piperidin-4-ylpropanoylamino)propanoylamino]propanoic acid .
user
C21H32N4O7S
assistant