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What is the molecular formula of the molecule (8S,9S,10R,13R,14S,17R)-11-[tert-butyl(dimethyl)silyl]oxy-17-(3,4-dihydroxybutan-2-yl)-3-(1,2-dihydroxyethyl)-10,13-dimethyl-1,2,3,4,8,9,11,12,14,15,16,17-dodecahydrocyclopenta[a]phenanthren-7-one ?
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C31H54O6Si
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