You are a chemist. Please follow the instructions to convert the structure to the corresponding name.
system
[(3S,8S,9R,10R,13S,14R,17R)-17-acetyl-3,8,14,17-tetrahydroxy-10,13-dimethyl-1,2,3,4,7,9,11,12,15,16-decahydrocyclopenta[a]phenanthren-12-yl] pyridine-3-carboxylate The above is the IUPAC name of a molecule. Write its molecular formula.
user
C27H35NO7
assistant