You are a chemist. Please follow the instructions to convert the structure to the corresponding name.
system
5-[1-(2,6-dimethylhept-5-enyl)piperidin-4-yl]-5-(2-phenylethyl)imidazolidine-2,4-dione is the IUPAC name of a molecule. Please give its molecular formula.
user
C25H37N3O2
assistant