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,8S,9S,10R,13S,14S,17R)-3-hydroxy-10,13-dimethyl-17-[(2R)-6-methyl-5-methylideneheptan-2-yl]-1,2,3,4,7,8,9,11,12,14,15,17-dodecahydrocyclopenta[a]phenanthren-16-one is given. What is its corresponding molecular formula?
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C28H44O2
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