You are a chemist. Please follow the instructions to convert the structure to the corresponding name.
system
2,2-dimethyl-1-[4-[5-[3-(trifluoromethyl)phenyl]-1,3-oxazol-2-yl]piperazin-1-yl]propan-1-one is the IUPAC name of a molecule. Please give its molecular formula.
user
C19H22F3N3O2
assistant