You are a chemist. Please follow the instructions to convert the structure to the corresponding name.
system
Provide the molecular formula for the IUPAC named substance (5Z)-2-(5-bromoquinolin-8-yl)imino-5-[(2,4-dimethoxyphenyl)methylidene]-1,3-thiazolidin-4-one .
user
C21H16BrN3O3S
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