You are a chemist. Please follow the instructions to convert the structure to the corresponding name.
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For the molecule named N-[(1R)-1-(2,5-dimethyl-1,3-thiazol-4-yl)ethyl]-N-methyl-2-(5-methyl-2,4-dioxopyrimidin-1-yl)acetamide by IUPAC nomenclature, provide its molecular formula.
user
C15H20N4O3S
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