You are a chemist. Please follow the instructions to convert the structure to the corresponding name.
system
1-(1-bromoethyl)-4-fluorobenzene;tert-butyl 4-[1-(4-fluorophenyl)ethyl]piperazine-1-carboxylate;fluorobenzene;1-(4-fluorophenyl)ethanol;1-(4-fluorophenyl)ethanone;1-[1-(4-fluorophenyl)ethyl]piperazine is the IUPAC name of a molecule. Please give its molecular formula.
user
C59H71BrF6N4O4
assistant