You are a chemist. Please follow the instructions to convert the structure to the corresponding name.
system
1-[4-[6-(2-ethylpyrazol-3-yl)-2-methylpyrimidin-4-yl]piperidin-1-yl]ethanone is the IUPAC name of a molecule. Please give its molecular formula.
user
C17H23N5O
assistant