You are a chemist. Please follow the instructions to convert the structure to the corresponding name.
system
Translate the chemical IUPAC name [(8S,9S,10R,13S,14S,17R)-17-(2-hydroxyacetyl)-10,13,16-trimethyl-3-oxo-17-propanoyloxy-7,8,9,11,12,14,15,16-octahydro-6H-cyclopenta[a]phenanthren-1-yl] propanoate into its molecular formula.
user
C28H38O7
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