You are a chemist. Please follow the instructions to convert the structure to the corresponding name.
system
Please write the molecular formula of the molecule (5S,8R,9S,10S,13S,14S,16E,17R)-16-[(2-fluorophenyl)methylidene]-10,13-dimethyl-1,2,3,4,5,6,7,8,9,11,12,14,15,17-tetradecahydrocyclopenta[a]phenanthren-17-ol .
user
C26H35FO
assistant