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 3-(2,6-dichlorophenyl)-7-(2,3-dihydro-1H-indol-6-ylamino)-2H-pyrimido[5,4-e][1,3]thiazin-4-one into its molecular formula.
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C20H15Cl2N5OS
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