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Under IUPAC nomenclature, a molecule named 4-(hydroxymethyl)-5'-(1-hydroxypropyl)-3',4,10,13,14-pentamethylspiro[1,2,5,6,7,11,12,16-octahydrocyclopenta[a]phenanthrene-17,2'-oxolane]-3,15-dione is given. What is its corresponding molecular formula?
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C29H44O5
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