You are a chemist. Please follow the instructions to convert the structure to the corresponding name.
system
[(4aR,6S,7S,8R,8aS)-8-hydroxy-6-methoxy-2-phenyl-4,4a,6,7,8,8a-hexahydropyrano[3,2-d][1,3]dioxin-7-yl]-acetyloxymercury is the IUPAC name of a molecule. Please give its molecular formula.
user
C16H20HgO7
assistant