You are a chemist. Please follow the instructions to convert the structure to the corresponding name.
system
Name the molecular formula for the molecule established as 2-(2-naphthalen-2-ylpyrimidin-4-yl)-1,5,6,7-tetrahydropyrrolo[3,2-c]pyridin-4-one using the IUPAC nomenclature.
user
C21H16N4O
assistant