You are a chemist. Please follow the instructions to convert the structure to the corresponding name.
system
(3S,8S,9S,10R,13S,14S,17R)-17-[(2S)-3-(benzenesulfonyl)-4-(4-ethyl-1-hydroxy-4-methylcyclohexyl)butan-2-yl]-10,13-dimethyl-3-(trifluoromethyl)-1,2,4,7,8,9,11,12,14,15,16,17-dodecahydrocyclopenta[a]phenanthren-3-ol is the IUPAC name of a molecule. Please give its molecular formula.
user
C39H57F3O4S
assistant