You are a chemist. Please follow the instructions to convert the structure to the corresponding name.
system
(2R,4aR,6S,7R,8R,8aR)-6-methoxy-2-(4-methoxyphenyl)-8-phenylmethoxy-4,4a,6,7,8,8a-hexahydropyrano[3,2-d][1,3]dioxin-7-ol The above is the IUPAC name of a molecule. Write its molecular formula.
user
C22H26O7
assistant