You are a chemist. Please follow the instructions to convert the structure to the corresponding name.
system
6-[5-[7-(4a,9a-dihydrocarbazol-9-yl)-4a,9a-dihydrocarbazol-9-yl]cyclohexa-2,4-dien-1-yl]cyclohexa-1,5-diene-1-carbonitrile is the IUPAC name of a molecule. Please give its molecular formula.
user
C37H31N3
assistant