You are a chemist. Please follow the instructions to convert the structure to the corresponding name.
system
(1R,13R)-13-(4-fluorophenyl)-12,14-dioxapentacyclo[11.7.1.02,11.05,10.015,20]henicosa-2(11),3,5,7,9,15,17,19-octaene is the IUPAC name of a molecule. Please give its molecular formula.
user
C25H17FO2
assistant