You are a chemist. Please follow the instructions to convert the structure to the corresponding name.
system
Can you give the molecular formula of the molecule (4R)-8-bromo-6-(2-fluorophenyl)-3-(furan-2-yl)-4-methyl-4H-imidazo[1,5-a][1,4]benzodiazepine ?
user
C22H15BrFN3O
assistant