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 (8R,9S,13S,14S)-13-(12-bromododecyl)-7,8,9,11,12,14,15,16-octahydro-6H-cyclopenta[a]phenanthren-17-one .
user
C29H43BrO
assistant