You are a chemist. Please follow the instructions to convert the structure to the corresponding name.
system
Name the molecular formula for the molecule established as 3-(6-imidazol-1-ylpyridin-2-yl)-5-(1-methoxycycloheptyl)-1,2,4-oxadiazole using the IUPAC nomenclature.
user
C18H21N5O2
assistant