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 N-[2-[(1S)-1-cyclopropylethyl]-4-methylpyrazol-3-yl]-2-(6-methyl-2,4-dioxo-1H-pyrimidin-5-yl)acetamide is given. What is its corresponding molecular formula?
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C16H21N5O3
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