You are a chemist. Please follow the instructions to convert the structure to the corresponding name.
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Convert the IUPAC name of a molecule methyl 2-[[2-[2-[(3,4-dichlorophenyl)methylidene]hydrazinyl]-2-oxoacetyl]amino]-4,5,6,7-tetrahydro-1-benzothiophene-3-carboxylate into molecular formula.
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C19H17Cl2N3O4S
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