You are a chemist. Please follow the instructions to convert the structure to the corresponding name.
system
Please write the molecular formula of the molecule 4,6-diphenyl-2-(3-spiro[fluorene-9,15'-tetracyclo[10.2.1.05,14.08,13]pentadeca-1,3,5(14),6,8(13),9,11-heptaene]-2-ylphenyl)-1,4-dihydropyrimidine .
user
C49H32N2
assistant