You are a chemist. Please follow the instructions to convert the structure to the corresponding name.
system
6-(2-aminopyrimidin-5-yl)-2-ethyl-8-[(4-hydroxy-2-methylbutan-2-yl)amino]-2,7-naphthyridin-1-one The above is the IUPAC name of a molecule. Write its molecular formula.
user
C19H24N6O2
assistant