You are a chemist. Please follow the instructions to convert the structure to the corresponding name.
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Under IUPAC nomenclature, a molecule named [(7S)-7-methyl-4-oxo-5,6,7,8-tetrahydro-3H-[1]benzothiolo[2,3-d]pyrimidin-2-yl]methyl N'-(4-chlorophenyl)carbamimidothioate is given. What is its corresponding molecular formula?
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C19H19ClN4OS2
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