You are a chemist. Please follow the instructions to convert the structure to the corresponding name.
system
1-[2-[5-(4-chlorophenyl)-2-(dimethylamino)pyrimidin-4-yl]pyrrolidin-1-yl]-2-(3,5-dimethyl-1,2-oxazol-4-yl)ethanone The above is the IUPAC name of a molecule. Write its molecular formula.
user
C23H26ClN5O2
assistant