You are a chemist. Please follow the instructions to convert the structure to the corresponding name.
system
For the molecule named (2R,3R,5S,9R,10R,13R,14R,17R)-2,3,14-trihydroxy-13-methyl-17-(5-oxo-2H-furan-3-yl)-1,2,3,4,5,6,9,11,12,15,16,17-dodecahydrocyclopenta[a]phenanthrene-10-carbaldehyde by IUPAC nomenclature, provide its molecular formula.
user
C23H30O6
assistant