You are a chemist. Please follow the instructions to convert the structure to the corresponding name.
system
[2-oxo-2-(propan-2-ylamino)ethyl] 2-[(4R)-4-methyl-4-naphthalen-2-yl-2,5-dioxoimidazolidin-1-yl]acetate The above is the IUPAC name of a molecule. Write its molecular formula.
user
C21H23N3O5
assistant