You are a chemist. Please follow the instructions to convert the structure to the corresponding name.
system
3-(3,5-dimethyl-1,2-oxazol-4-yl)-N-[4-(4-methylpiperidin-1-yl)phenyl]propanamide The above is the IUPAC name of a molecule. Write its molecular formula.
user
C20H27N3O2
assistant