You are a chemist. Please follow the instructions to convert the structure to the corresponding name.
system
Translate the chemical IUPAC name diethyl 2-[3-[(3S,4S,5R,6R)-3,4-diacetyloxy-5-hydroxy-6-(hydroxymethyl)oxan-2-yl]oxypropyl]-2-fluoropropanedioate into its molecular formula.
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C20H31FO12
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