You are a chemist. Please follow the instructions to convert the structure to the corresponding name.
system
(3S,3aS,4aS,8aR,9aR)-3-[[4-(4-fluorophenyl)-3,6-dihydro-2H-pyridin-1-yl]methyl]-8a-methyl-5-methylidene-3a,4,4a,6,7,8,9,9a-octahydro-3H-benzo[f][1]benzofuran-2-one The above is the IUPAC name of a molecule. Write its molecular formula.
user
C26H32FNO2
assistant