You are a chemist. Please follow the instructions to convert the structure to the corresponding name.
system
[(6S,7S,8aS)-7-acetamido-2,2-dimethyl-6-prop-1-en-2-yloxy-4,4a,6,7,8,8a-hexahydropyrano[3,2-d][1,3]dioxin-8-yl] acetate is the IUPAC name of a molecule. Please give its molecular formula.
user
C16H25NO7
assistant