You are a chemist. Please follow the instructions to convert the structure to the corresponding name.
system
Convert the IUPAC name of a molecule (8R,9S,10R,13S,14S,17R)-13,17-diethyl-17-hydroxy-2-methylidene-6,7,8,9,10,11,12,14,15,16-decahydro-1H-cyclopenta[a]phenanthren-3-one into molecular formula.
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C22H32O2
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