You are a chemist. Please follow the instructions to convert the structure to the corresponding name.
system
Translate the chemical IUPAC name [(1S)-1-[(1S,3R,9S,10R,13S,14S)-10,13-dimethyl-1,3-bis(triethylsilyloxy)-2,3,4,9,11,12,14,15-octahydro-1H-cyclopenta[a]phenanthren-17-yl]ethyl] 4-hydroxy-4-methylpentanoate into its molecular formula.
user
C39H68O5Si2
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