You are a chemist. Please follow the instructions to convert the structure to the corresponding name.
system
(3S,4R,5R,10R,11R,13S,14S,17R)-3,11-dihydroxy-17-[(1S)-1-hydroxyethyl]-10,13-dimethyl-2,3,4,5,6,7,11,12,14,15,16,17-dodecahydro-1H-cyclopenta[a]phenanthrene-4-carboxylic acid The above is the IUPAC name of a molecule. Write its molecular formula.
user
C22H34O5
assistant