You are a chemist. Please follow the instructions to convert the structure to the corresponding name.
system
(4S)-4-[(3R,5S,10S,13R)-3,7-dihydroxy-10,13-dimethyl-2,3,4,5,6,7,8,9,11,12,14,15,16,17-tetradecahydro-1H-cyclopenta[a]phenanthren-17-yl]pentanoic acid The above is the IUPAC name of a molecule. Write its molecular formula.
user
C24H40O4
assistant