You are a chemist. Please follow the instructions to convert the structure to the corresponding name.
system
Translate the chemical IUPAC name 4-hydroxy-1-[4-hydroxy-5-(hydroxymethyl)thiolan-2-yl]-5-methyl-3-[4-(1-propyltriazol-4-yl)butyl]-4H-pyrimidin-2-one into its molecular formula.
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C19H31N5O4S
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