You are a chemist. Please follow the instructions to convert the structure to the corresponding name.
system
[(2S,6R)-2-methyl-6-[(3S,5R,6R,8R,9S,10R,13R,14S,15S,17R)-3,5,6,15-tetrahydroxy-10,13-dimethyl-1,2,3,4,6,7,8,9,11,12,14,15,16,17-tetradecahydrocyclopenta[a]phenanthren-17-yl]heptyl] hydrogen sulfate is the IUPAC name of a molecule. Please give its molecular formula.
user
C27H48O8S
assistant