You are a chemist. Please follow the instructions to convert the structure to the corresponding name.
system
Under IUPAC nomenclature, a molecule named [3-[(2-fluorophenyl)methyl]azetidin-3-yl]-(1,2,4,5-tetrahydro-3-benzazepin-3-yl)methanone;hydrochloride is given. What is its corresponding molecular formula?
user
C21H24ClFN2O
assistant