You are a chemist. Please follow the instructions to convert the structure to the corresponding name.
system
(5R,8S,9R,10S,13S,14R,16Z,17S)-16-benzylidene-10,13-dimethyl-1,2,3,4,5,6,7,8,9,11,12,14,15,17-tetradecahydrocyclopenta[a]phenanthren-17-ol is the IUPAC name of a molecule. Please give its molecular formula.
user
C26H36O
assistant