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 (10R,13S,16E)-16-[(4-methoxyphenyl)methylidene]-10,13-dimethyl-1,2,3,4,7,8,9,11,12,14,15,17-dodecahydrocyclopenta[a]phenanthrene-3,17-diol .
user
C27H36O3
assistant