You are a chemist. Please follow the instructions to convert the structure to the corresponding name.
system
[(3S,8S,9R,10R,12R,13S,14R,17S)-17-acetyl-8,14,17-trihydroxy-3-[4-hydroxy-5-[5-[5-(5-hydroxy-4-methoxy-6-methyloxan-2-yl)oxy-4-methoxy-6-methyloxan-2-yl]oxy-4-methoxy-6-methyloxan-2-yl]oxy-6-methyloxan-2-yl]oxy-10,13-dimethyl-1,2,3,4,7,9,11,12,15,16-decahydrocyclopenta[a]phenanthren-12-yl] 3-phenylprop-2-enoate The above is the IUPAC name of a molecule. Write its molecular formula.
user
C57H84O19
assistant