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,10S,13S,17S)-N-methoxy-10,13-dimethyl-17-[(1S)-1-trimethylsilyloxyethyl]-1,2,3,4,5,6,7,8,9,12,14,15,16,17-tetradecahydrocyclopenta[a]phenanthren-11-imine .
user
C25H45NO2Si
assistant