You are a chemist. Please follow the instructions to convert the structure to the corresponding name.
system
What is the molecular formula of the molecule identified by [(8R,9S,10R,13S,14S,17S)-17-acetyl-10,13-dimethyl-16-methylidene-3-oxo-1,2,6,7,8,9,11,12,14,15-decahydrocyclopenta[a]phenanthren-17-yl] acetate ?
user
C24H32O4
assistant