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What is the molecular formula of the molecule (3S,8S,9S,10R,13S,14S)-3-hydroxy-10,13-dimethyl-2,3,4,7,8,9,11,12,14,15,16,17-dodecahydro-1H-cyclopenta[a]phenanthrene-17-carboxylic acid ?
user
C20H30O3
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