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 (2S,3R,4aS,7R,7aS)-2,3-dimethoxy-7-methyl-2,3,4a,6,7,7a-hexahydrofuro[2,3-b][1,4]dioxine .
user
C9H16O5
assistant