You are a chemist. Please follow the instructions to convert the structure to the corresponding name.
system
Convert the IUPAC name of a molecule N-(3,4-dihydro-2H-chromen-3-yl)-4,5,6,7-tetrahydro-1H-pyrazolo[4,3-c]pyridine-3-carboxamide;hydrochloride into molecular formula.
user
C16H19ClN4O2
assistant