You are a chemist. Please follow the instructions to convert the structure to the corresponding name.
system
What is the molecular formula of the compound with this IUPAC name 5-[2-[2-(2-chloroethyl)-6,7-difluorobenzimidazol-1-yl]ethyl]-1,2,4-oxadiazole ?
user
C13H11ClF2N4O
assistant