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)-3-methoxy-13-methyl-15-(3-oxopentyl)-7,8,9,11,12,14,15,16-octahydro-6H-cyclopenta[a]phenanthren-17-one .
user
C24H32O3
assistant