You are a chemist. Please follow the instructions to convert the structure to the corresponding name.
system
What is the molecular formula of the compound with this IUPAC name 2-[4-[1-(2-fluorophenyl)imidazol-2-yl]piperazin-1-yl]-N,N-di(propan-2-yl)acetamide ?
user
C21H30FN5O
assistant