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,13S,14S)-3-methoxy-13-[(R)-(4-methylphenyl)sulfinyl]-7,8,12,14,15,16-hexahydro-6H-cyclopenta[a]phenanthren-17-one .
user
C25H26O3S
assistant