You are a chemist. Please follow the instructions to convert the structure to the corresponding name.
system
4-[[(8R,9R,10R,13S,14S)-10,13-dimethyl-3,17-dioxo-2,6,7,8,9,11,12,14,15,16-decahydro-1H-cyclopenta[a]phenanthren-1-yl]oxy]-4-oxobutanoic acid The above is the IUPAC name of a molecule. Write its molecular formula.
user
C23H30O6
assistant