You are a chemist. Please follow the instructions to convert the structure to the corresponding name.
system
(2S)-2-[[(2R)-2-(2,4-dichlorophenoxy)propanoyl]amino]-N-[(Z)-(5-iodofuran-2-yl)methylideneamino]-4-methylpentanamide The above is the IUPAC name of a molecule. Write its molecular formula.
user
C20H22Cl2IN3O4
assistant