You are a chemist. Please follow the instructions to convert the structure to the corresponding name.
system
For the molecule named (2S,3S,4S,5R,6R)-6-[[(3S,3aR,6R,6aS)-6-nitrooxy-2,3,3a,5,6,6a-hexahydrofuro[3,2-b]furan-3-yl]oxy]-3,4,5-trihydroxyoxane-2-carboxylic acid by IUPAC nomenclature, provide its molecular formula.
user
C12H17NO12
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