You are a chemist. Please follow the instructions to convert the structure to the corresponding name.
system
N-[(1S,2R)-2-methylcyclohexyl]-2-(3-methyl-2,4,5-trioxoimidazolidin-1-yl)acetamide is the IUPAC name of a molecule. Please give its molecular formula.
user
C13H19N3O4
assistant