You are a chemist. Please follow the instructions to convert the structure to the corresponding name.
system
Translate the chemical IUPAC name [2-[(5S,8S,9S,10S,13S,14S)-10,13-dimethyl-3,11-dioxo-2,4,5,6,7,8,9,12,14,15-decahydro-1H-cyclopenta[a]phenanthren-17-yl]-2-oxoethyl] acetate into its molecular formula.
user
C23H30O5
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