You are a chemist. Please follow the instructions to convert the structure to the corresponding name.
system
N-[4-[3-(6-methylspiro[7,8-dihydro-6H-benzo[a]azulene-10,9'-fluorene]-5-yl)-[1]benzofuro[2,3-b]pyrazin-2-yl]cyclohexa-2,4-dien-1-yl]-2-naphthalen-2-ylaniline The above is the IUPAC name of a molecule. Write its molecular formula.
user
C59H43N3O
assistant