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 3-(benzimidazol-1-ylmethyl)-5-(6-methoxy-2,3-dihydro-1H-pyrrolo[2,3-b]pyridin-2-yl)-1,2,4-oxadiazole ?
user
C18H16N6O2
assistant