You are a chemist. Please follow the instructions to convert the structure to the corresponding name.
system
6-amino-N-[(3S,4R)-4-cyclopropyl-1-methylsulfonylpyrrolidin-3-yl]pyridine-3-carboxamide The above is the IUPAC name of a molecule. Write its molecular formula.
user
C14H20N4O3S
assistant