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Can you give the molecular formula of the molecule (3S,10R,13R,17S)-17-ethyl-N-methoxy-10,13-dimethyl-3-trimethylsilyloxy-1,2,3,4,7,8,9,12,14,15,16,17-dodecahydrocyclopenta[a]phenanthren-11-imine ?
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C25H43NO2Si
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