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For the molecule named 2-[[4-[2-(11,17-dihydroxy-10,13-dimethyl-3-oxo-2,6,7,8,9,11,12,14,15,16-decahydro-1H-cyclopenta[a]phenanthren-17-yl)-2-oxoethoxy]-4-oxobutanoyl]amino]propanoic acid by IUPAC nomenclature, provide its molecular formula.
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C28H39NO9
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