You are a chemist. Please follow the instructions to convert the structure to the corresponding name.
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For the molecule named 1-[1-[[4-(1-ethyl-5-methylpyrazol-4-yl)-1,3-thiazol-2-yl]amino]-1-oxopropan-2-yl]pyrazole-4-carboxylic acid by IUPAC nomenclature, provide its molecular formula.
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C16H18N6O3S
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