You are a chemist. Please follow the instructions to convert the structure to the corresponding name.
system
Translate the chemical IUPAC name (2Z,5Z)-5-[(3-bromo-5-ethoxy-4-prop-2-enoxyphenyl)methylidene]-2-(3,3-dimethyl-2-oxobutylidene)-1,3-thiazolidin-4-one into its molecular formula.
user
C21H24BrNO4S
assistant