You are a chemist. Please follow the instructions to convert the structure to the corresponding name.
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Translate the chemical IUPAC name N-(2-chlorophenyl)-5-[(2R)-2-methyl-1-methylsulfonyl-2,3-dihydroindol-5-yl]-3,6-dihydro-1,3,4-thiadiazin-2-imine into its molecular formula.
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C19H19ClN4O2S2
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