You are a chemist. Please follow the instructions to convert the structure to the corresponding name.
system
Translate the chemical IUPAC name 2-tert-butyl-11-(3-phenylphenyl)triphenylene;ethane;11-[3-(3-phenylphenyl)phenyl]-2H-triphenylen-2-ide;yttrium into its molecular formula.
user
C72H57Y-
assistant