You are a chemist. Please follow the instructions to convert the structure to the corresponding name.
system
Translate the chemical IUPAC name (8R,9R,10R,13S,14S)-16-fluoro-10,13-dimethyl-6,7,8,9,11,12,14,15,16,17-decahydro-5H-cyclopenta[a]phenanthrene-3,17-diol into its molecular formula.
user
C19H27FO2
assistant