You are a chemist. Please follow the instructions to convert the structure to the corresponding name.
system
3-cyclopentyl-2-methyl-N-[1-(5-methyl-1,2,4-oxadiazol-3-yl)cyclohexyl]propanamide is the IUPAC name of a molecule. Please give its molecular formula.
user
C18H29N3O2
assistant