You are a chemist. Please follow the instructions to convert the structure to the corresponding name.
system
Provide the molecular formula for the IUPAC named substance (3S,7R,8S,9S,10R,13R,14S,17R)-10,13-dimethyl-17-[(Z,2R)-6-methyl-5-propan-2-ylhept-3-en-2-yl]-2,3,4,7,8,9,11,12,14,15,16,17-dodecahydro-1H-cyclopenta[a]phenanthrene-3,7-diol .
user
C30H50O2
assistant