You are a chemist. Please follow the instructions to convert the structure to the corresponding name.
system
4-methyl-2-propan-2-yl-6-[4-[(3-propan-2-yloxyphenyl)methyl]piperazin-1-yl]pyrimidine is the IUPAC name of a molecule. Please give its molecular formula.
user
C22H32N4O
assistant