You are a chemist. Please follow the instructions to convert the structure to the corresponding name.
system
Please write the molecular formula of the molecule (4E)-2-(2-chloro-4-nitrophenyl)-4-[(3-iodo-5-methoxy-4-prop-2-enoxyphenyl)methylidene]-1,3-oxazol-5-one .
user
C20H14ClIN2O6
assistant