You are a chemist. Please follow the instructions to convert the structure to the corresponding name.
system
What is the molecular formula of the compound with this IUPAC name (2S)-2-amino-3-methyl-N-[2-oxo-2-[2-(2-oxo-3H-benzimidazol-1-yl)ethylamino]ethyl]butanamide;hydrochloride ?
user
C16H24ClN5O3
assistant