You are a chemist. Please follow the instructions to convert the structure to the corresponding name.
system
1-methyl-1-[[(2R,3S)-1-methyl-2-(1-methylpyrazol-4-yl)piperidin-3-yl]methyl]-3-[(2-methyloxolan-2-yl)methyl]urea The above is the IUPAC name of a molecule. Write its molecular formula.
user
C19H33N5O2
assistant