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 ethyl 4-[[(4R)-3-methyl-1-[4-(4-methylphenyl)-1,3-thiazol-2-yl]-5-oxo-4H-pyrazol-4-yl]diazenyl]benzoate is given. What is its corresponding molecular formula?
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C23H21N5O3S
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