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 (8S,9S,10R,13S,14S,17R)-13-methyl-16-(4-methylphenyl)sulfonyloxy-17-[(2R)-pentan-2-yl]-2,3,4,5,6,7,8,9,11,12,14,15,16,17-tetradecahydro-1H-cyclopenta[a]phenanthrene-10-carboxylic acid .
user
C31H46O5S
assistant