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 (12S,13S)-3,12,13,21,22,26-hexahydroxy-15-methoxy-7-propyl-6,17-dioxahexacyclo[12.12.0.02,11.04,9.016,25.018,23]hexacosa-1(14),2(11),3,9,15,18(23),19,21,25-nonaene-5,24-dione is given. What is its corresponding molecular formula?
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C28H24O11
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