You are a chemist. Please follow the instructions to convert the structure to the corresponding name.
system
3-amino-1-[2-(1,3-oxazol-5-yl)phenyl]-5-[1-[5-(trifluoromethyl)pyridin-2-yl]ethyl]-2H-pyrazine-6-carboxamide The above is the IUPAC name of a molecule. Write its molecular formula.
user
C22H19F3N6O2
assistant