You are a chemist. Please follow the instructions to convert the structure to the corresponding name.
system
What is the molecular formula of the compound with this IUPAC name 5-oxo-5-[[(7R,11S,13S,17S)-7,11,13-trimethyl-3-oxo-2,6,7,8,9,10,11,12,14,15,16,17-dodecahydro-1H-cyclopenta[a]phenanthren-17-yl]oxy]pentanoic acid ?
user
C25H36O5
assistant