You are a chemist. Please follow the instructions to convert the structure to the corresponding name.
system
Translate the chemical IUPAC name [(8S,9R,10S,13S,14S,17R)-17-(2-chloroacetyl)-4,9-difluoro-11-hydroxy-10,13,16-trimethyl-3-oxo-6,7,8,11,12,14,15,16-octahydrocyclopenta[a]phenanthren-17-yl] butanoate into its molecular formula.
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C26H33ClF2O5
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