You are a chemist. Please follow the instructions to convert the structure to the corresponding name.
system
(2S)-1-piperidin-1-yl-2-[4-[2-[(2S,4S)-2-propan-2-yloxan-4-yl]acetyl]piperazin-1-yl]propan-1-one is the IUPAC name of a molecule. Please give its molecular formula.
user
C22H39N3O3
assistant