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What is the molecular formula of the molecule identified by 11,17-dihydroxy-1,2,6,9,10,13,16-heptamethyl-17-(2-methylpropanoyl)-1,2,6,7,8,11,12,14,15,16-decahydrocyclopenta[a]phenanthren-3-one ?
user
C28H44O4
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