You are a chemist. Please follow the instructions to convert the structure to the corresponding name.
system
[4-[(3-methyl-1,2-oxazol-5-yl)methyl]piperazin-1-yl]-[2-[4-(trifluoromethyl)phenyl]cyclopropyl]methanone The above is the IUPAC name of a molecule. Write its molecular formula.
user
C20H22F3N3O2
assistant