You are a chemist. Please follow the instructions to convert the structure to the corresponding name.
system
1-[3-[(5-piperidin-1-ylsulfonylpyridin-2-yl)amino]pyrrolidin-1-yl]propan-1-one is the IUPAC name of a molecule. Please give its molecular formula.
user
C17H26N4O3S
assistant