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 3,3-dimethyl-5-(3-methylpiperidin-1-yl)sulfonyl-1-(2-oxo-2-piperidin-1-ylethyl)indol-2-one .
user
C23H33N3O4S
assistant