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system
Name the molecular formula for the molecule established as ethane;ethene;11-(4-ethenylphenyl)-5',5'-dimethylspiro[1,2,4,5,6,7,8,11,12,13,14,15,16,17-tetradecahydrocyclopenta[a]phenanthrene-3,2'-oxane] using the IUPAC nomenclature.
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C37H58O
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