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system
Name the molecular formula for the molecule established as (3S,6aR,11aS,11bR)-3-hydroxy-9-[(1S)-1-[(2S,3R,5S)-3-hydroxy-5-methylpiperidin-2-yl]ethyl]-10,11b-dimethyl-1,2,3,4,6,6a,11,11a-octahydrobenzo[a]fluorene-7,8-dione using the IUPAC nomenclature.
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C27H37NO4
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