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 (2R,5'S,8'R,9'S,10'S,13'S,14'S)-3,10',13'-trimethylspiro[1,4-dioxane-2,17'-2,4,5,6,7,8,9,11,12,14,15,16-dodecahydro-1H-cyclopenta[a]phenanthrene]-3'-one .
user
C23H36O3
assistant