You are a chemist. Please follow the instructions to convert the structure to the corresponding name.
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Translate the chemical IUPAC name 1-[(5R,6R,8R,9R)-4-amino-9-hydroxy-6-(hydroxymethyl)-2,2-dioxo-1,7-dioxa-2lambda6-thiaspiro[4.4]non-3-en-8-yl]-5-methylpyrimidine-2,4-dione into its molecular formula.
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C12H15N3O8S
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