You are a chemist. Please follow the instructions to convert the structure to the corresponding name.
system
Convert the IUPAC name of a molecule (8S,11R,13S,14S,17S)-17-hydroxy-11-(4-hydroxyphenyl)-13-methyl-17-prop-1-ynyl-1,2,6,7,8,11,12,14,15,16-decahydrocyclopenta[a]phenanthren-3-one into molecular formula.
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C27H30O3
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