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-oxo-3-(4-pyrimidin-2-ylpiperazin-1-yl)propyl]azetidine-3-carboxamide;hydrochloride into molecular formula.
user
C15H23ClN6O2
assistant