You are a chemist. Please follow the instructions to convert the structure to the corresponding name.
system
Convert the IUPAC name of a molecule 1-[(4-tert-butyl-2-methylphenyl)methylamino]-2-(6-chloro-7-fluoro-5,6-dihydrobenzimidazol-1-yl)ethanol into molecular formula.
user
C21H27ClFN3O
assistant