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 [(3aR,8aS)-2,3,3a,4,5,7,8,8a-octahydro-1H-pyrrolo[3,4-d]azepin-6-yl]-[2-(4-fluorophenyl)triazol-4-yl]methanone;hydrochloride .
user
C17H21ClFN5O
assistant