You are a chemist. Please follow the instructions to convert the structure to the corresponding name.
system
N-[[1-[(4-methoxy-3,5-dimethylpyridin-2-yl)methyl]piperidin-3-yl]methyl]-2-methylpropanamide The above is the IUPAC name of a molecule. Write its molecular formula.
user
C19H31N3O2
assistant