You are a chemist. Please follow the instructions to convert the structure to the corresponding name.
system
Translate the chemical IUPAC name [(1S,4aS,5S,7aR)-7-(hydroxymethyl)-1-[(2R,3S,4S,5S,6S)-3,4,5-trihydroxy-6-(hydroxymethyl)oxan-2-yl]oxy-1,4a,5,7a-tetrahydrocyclopenta[c]pyran-5-yl] 4-hydroxybenzoate into its molecular formula.
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C22H26O11
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