You are a chemist. Please follow the instructions to convert the structure to the corresponding name.
system
Provide the molecular formula for the IUPAC named substance [(3R,3aS,5S,6R,7aS)-5-acetyloxy-3-methyl-3,3a,4,5,6,7a-hexahydro-2H-furo[2,3-b]pyran-6-yl]methyl acetate .
user
C13H20O6
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