You are a chemist. Please follow the instructions to convert the structure to the corresponding name.
system
5-(5-cyclopropyl-1,2-oxazol-3-yl)-3-(2-piperidin-1-ylpyridin-4-yl)-1,2,4-oxadiazole The above is the IUPAC name of a molecule. Write its molecular formula.
user
C18H19N5O2
assistant