You are a chemist. Please follow the instructions to convert the structure to the corresponding name.
system
(5S)-3-[(Z)-(7-methoxy-1,3-benzodioxol-5-yl)methylideneamino]-5-(4-methoxyphenyl)-5-methylimidazolidine-2,4-dione The above is the IUPAC name of a molecule. Write its molecular formula.
user
C20H19N3O6
assistant