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 (7R,13S,17S)-17-but-3-en-1-ynyl-17-hydroxy-7,13-dimethyl-1,2,6,7,8,9,10,11,12,14,15,16-dodecahydrocyclopenta[a]phenanthren-3-one is given. What is its corresponding molecular formula?
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C23H30O2
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