You are a chemist. Please follow the instructions to convert the structure to the corresponding name.
system
Can you give the molecular formula of the molecule 3-[3-(1-acetamidocycloheptyl)-1,2,4-oxadiazol-5-yl]-N-[2-(diethylamino)-2-oxoethyl]-N-methylpropanamide ?
user
C21H35N5O4
assistant