You are a chemist. Please follow the instructions to convert the structure to the corresponding name.
system
[5-(1,2,4b,8a-tetrahydrocarbazol-9-yl)cyclohepta-1,3,5-trien-1-yl]-(3-carbazol-9-ylcyclohexyl)-cyclohexa-1,5-dien-3-yn-1-yl-phenyl-lambda4-sulfane The above is the IUPAC name of a molecule. Write its molecular formula.
user
C49H44N2S
assistant