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 2-[2-methyl-6-(5-methyl-2-pyridin-2-yl-1,3-thiazol-4-yl)-3-oxo-1,4-benzoxazin-4-yl]acetohydrazide into molecular formula.
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C20H19N5O3S
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