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system
Name the molecular formula for the molecule established as (4S,8R,9S,10R,13S,14S,17S)-3-(2-aminoethoxyimino)-4-ethyl-10,13-dimethyl-1,2,4,5,6,7,8,9,11,12,14,15,16,17-tetradecahydrocyclopenta[a]phenanthren-17-ol using the IUPAC nomenclature.
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C23H40N2O2
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