You are a chemist. Please follow the instructions to convert the structure to the corresponding name.
system
What is the molecular formula of the molecule identified by carbanide;2,4-ditert-butyl-6-[2-[6-[2-(3,5-ditert-butyl-2-hydroxyphenyl)phenyl]-1-methylidenepyrazin-1-ium-4-id-2-yl]phenyl]phenol;hafnium ?
user
C47H60HfN2O2-2
assistant