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 2-[[(3R,3aR,6S,6aS)-6-nitrooxy-2,3,3a,5,6,6a-hexahydrofuro[3,2-b]furan-3-yl]oxycarbonylamino]acetic acid is given. What is its corresponding molecular formula?
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C9H12N2O9
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