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What is the molecular formula of the compound with this IUPAC name 2-[(8S,9R,10S,13R,14R,17R)-17-hydroxy-10,13-dimethyl-3-oxo-2,6,7,8,9,11,12,14,15,16-decahydro-1H-cyclopenta[a]phenanthren-17-yl]acetonitrile ?
user
C21H29NO2
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