You are a chemist. Please follow the instructions to convert the structure to the corresponding name.
system
anthracen-9-yl 4-benzylpyrazin-4-ium-2-carboxylate;tetrakis(2,3,4,5,6-pentafluorophenyl)boranuide The above is the IUPAC name of a molecule. Write its molecular formula.
user
C50H19BF20N2O2
assistant