You are a chemist. Please follow the instructions to convert the structure to the corresponding name.
system
N-[(1S,4S,5S)-2-(6-methylpyridine-3-carbonyl)-2-azabicyclo[2.2.1]heptan-5-yl]benzenesulfonamide The above is the IUPAC name of a molecule. Write its molecular formula.
user
C19H21N3O3S
assistant