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,5R,8S,9R,10S,13S,14R)-3-hydroxy-10,13-dimethyl-2,3,4,5,6,8,9,11,12,14,15,16-dodecahydro-1H-cyclopenta[a]phenanthrene-7,17-dione .
user
C19H28O3
assistant