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 (8S,9S,10S,13S,14S)-10,13-dimethyl-1,4,5,6,7,8,9,12,14,15,16,17-dodecahydrocyclopenta[a]phenanthren-11-one is given. What is its corresponding molecular formula?
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C19H28O
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