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system
Provide the molecular formula for the IUPAC named substance N-[(3S,8R,9S,10R,13R,14S,17R)-14-hydroxy-10,13-dimethyl-17-(6-oxopyran-3-yl)-1,2,3,6,7,8,9,11,12,15,16,17-dodecahydrocyclopenta[a]phenanthren-3-yl]-2-pyrrolidin-1-ylacetamide .
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C30H42N2O4
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