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What is the molecular formula of the molecule 1-[(8R,9S,10S,13S,17S)-17-ethyl-14-hydroxy-10,13-dimethyl-1,2,3,4,5,6,7,8,9,11,12,15,16,17-tetradecahydrocyclopenta[a]phenanthren-12-yl]-2-methylbut-2-en-1-one ?
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C26H42O2
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