You are a chemist. Please follow the instructions to convert the structure to the corresponding name.
system
What is the molecular formula of the molecule 2-propyl-5-[3,4,5,6-tetrafluoro-7-[2-(5-pentyloxan-2-yl)ethyl]-9H-fluoren-2-yl]oxane ?
user
C33H42F4O2
assistant