You are a chemist. Please follow the instructions to convert the structure to the corresponding name.
system
Please write the molecular formula of the molecule N-[[(2S,4S)-4-(4-methyl-2-propan-2-ylpiperazine-1-carbonyl)oxolan-2-yl]methyl]-2-pyrimidin-5-ylacetamide .
user
C20H31N5O3
assistant