You are a chemist. Please follow the instructions to convert the structure to the corresponding name.
system
(5S)-5-(2,3-dihydro-1H-inden-5-yl)-5-methyl-3-[2-oxo-2-(4-pyrimidin-2-ylpiperazin-1-yl)ethyl]imidazolidine-2,4-dione The above is the IUPAC name of a molecule. Write its molecular formula.
user
C23H26N6O3
assistant