You are a chemist. Please follow the instructions to convert the structure to the corresponding name.
system
2,4-diphenyl-6-(6-spiro[cyclohexane-1,9'-fluorene]-2'-yldibenzofuran-2-yl)pyrimidine;4,6-diphenyl-2-(6-spiro[cyclohexane-1,9'-fluorene]-2'-yldibenzofuran-4-yl)pyrimidine;4,6-diphenyl-2-(6-spiro[cyclohexane-1,9'-fluorene]-2'-yldibenzothiophen-4-yl)pyrimidine is the IUPAC name of a molecule. Please give its molecular formula.
user
C138H102N6O2S
assistant