You are a chemist. Please follow the instructions to convert the structure to the corresponding name.
system
8-[5-(6-chloropyridin-3-yl)-4-[[4-(4-fluorophenyl)oxan-4-yl]methyl]-1,2,4-triazol-3-yl]-8-azabicyclo[5.2.0]nonane is the IUPAC name of a molecule. Please give its molecular formula.
user
C27H31ClFN5O
assistant