You are a chemist. Please follow the instructions to convert the structure to the corresponding name.
system
Convert the IUPAC name of a molecule [(1S,3S,5S,8S,9S,10S,13S,14S,17R)-1-acetyloxy-17-[1-(5,5-dimethyl-1,3-dioxan-2-yl)ethyl]-5-hydroxy-10,13-dimethyl-1,2,3,4,8,9,11,12,14,15,16,17-dodecahydrocyclopenta[a]phenanthren-3-yl] acetate into molecular formula.
user
C31H48O7
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