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system
Provide the molecular formula for the IUPAC named substance (6Z)-6-[[1-(3,5-dichlorophenyl)-2,5-dimethylpyrrol-3-yl]methylidene]-5-imino-2-methylsulfanyl-[1,3,4]thiadiazolo[3,2-a]pyrimidin-7-one .
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C19H15Cl2N5OS2
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