You are a chemist. Please follow the instructions to convert the structure to the corresponding name.
system
(3S,8R,9R,10R,13R,14S,17R)-3-hydroxy-4,4,9,13,14-pentamethyl-17-[(2R)-6-methyl-5-oxoheptan-2-yl]-1,2,3,7,8,10,12,15,16,17-decahydrocyclopenta[a]phenanthren-11-one The above is the IUPAC name of a molecule. Write its molecular formula.
user
C30H48O3
assistant