You are a chemist. Please follow the instructions to convert the structure to the corresponding name.
system
5-(4-chloro-1,3-benzoxazol-6-yl)-3-[3-(diethylamino)propyl]-6-(1-methylpyrazol-3-yl)pyrazin-2-amine The above is the IUPAC name of a molecule. Write its molecular formula.
user
C22H26ClN7O
assistant