You are a chemist. Please follow the instructions to convert the structure to the corresponding name.
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Under IUPAC nomenclature, a molecule named (3S,5S,8S,9S,10S,13S,14R,17Z)-17-hydroxyimino-10,13-dimethyl-1,2,3,4,5,6,7,8,9,11,12,14,15,16-tetradecahydrocyclopenta[a]phenanthren-3-ol is given. What is its corresponding molecular formula?
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C19H31NO2
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