You are a chemist. Please follow the instructions to convert the structure to the corresponding name.
system
Provide the molecular formula for the IUPAC named substance 1-benzyl-5-phenyl-3-[3-(3-spiro[fluorene-9,9'-xanthene]-4'-ylphenyl)phenyl]-1,2,4-triazole .
user
C52H35N3O
assistant