You are a chemist. Please follow the instructions to convert the structure to the corresponding name.
system
Can you give the molecular formula of the molecule 4-methylsulfanyl-2-[5-[[5-(2-nitrophenyl)furan-2-yl]methylidene]-4-oxo-2-sulfanylidene-1,3-thiazolidin-3-yl]butanoic acid ?
user
C19H16N2O6S3
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