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 (5S,8S,9S,10S,13S,14S,17S)-2-(hydroxymethylidene)-10,13-dimethyl-17-(2-methyl-1,3-dioxolan-2-yl)-1,4,5,6,7,8,9,12,14,15,16,17-dodecahydrocyclopenta[a]phenanthrene-3,11-dione .
user
C24H34O5
assistant