You are a chemist. Please follow the instructions to convert the structure to the corresponding name.
system
1-[(8R,9S,10S,13S,14S,17S)-2-chloro-3-hydroxy-10,13-dimethyl-2-morpholin-4-yl-1,3,4,5,6,7,8,9,11,12,14,15,16,17-tetradecahydrocyclopenta[a]phenanthren-17-yl]ethanone is the IUPAC name of a molecule. Please give its molecular formula.
user
C25H40ClNO3
assistant