You are a chemist. Please follow the instructions to convert the structure to the corresponding name.
system
2-(3-cyclopropyl-1,2-oxazol-5-yl)-N-[[1-(1-ethylcyclobutanecarbonyl)-4-hydroxypiperidin-4-yl]methyl]acetamide The above is the IUPAC name of a molecule. Write its molecular formula.
user
C21H31N3O4
assistant