You are a chemist. Please follow the instructions to convert the structure to the corresponding name.
system
Convert the IUPAC name of a molecule (5R,6S,8R,9R,10R,13R,14R,17S)-17-[(2S)-2,5-dihydroxy-6-methylhept-6-en-2-yl]-6-hydroxy-4,4,8,10,14-pentamethyl-2,5,6,7,9,11,13,15,16,17-decahydro-1H-cyclopenta[a]phenanthrene-3,12-dione into molecular formula.
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C30H48O5
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