You are a chemist. Please follow the instructions to convert the structure to the corresponding name.
system
11-[(3E,5E)-2,6-diphenylhepta-1,3,5-trien-4-yl]-11,11a-dihydro-6aH-fluoreno[3,2-b][1]benzothiole The above is the IUPAC name of a molecule. Write its molecular formula.
user
C38H30S
assistant