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-oxo-5-[(1,2,3,6-tetrahydropyridin-3-ylamino)methyl]-1H-isoindol-2-yl]piperidine-2,6-dione .
user
C19H22N4O3
assistant