You are a chemist. Please follow the instructions to convert the structure to the corresponding name.
system
For the molecule named 2-[1-[[4-[4-[[4-(6-bromo-3-oxo-1H-isoindol-2-yl)piperidin-1-yl]-phenylmethyl]phenyl]phenyl]-[3-[4-[[4-(6-fluoro-3-oxo-1H-isoindol-2-yl)piperidin-1-yl]-phenylmethyl]phenyl]phenyl]methyl]piperidin-4-yl]-5-(diethylamino)-3H-isoindol-1-one by IUPAC nomenclature, provide its molecular formula.
user
C82H81BrFN7O3
assistant