You are a chemist. Please follow the instructions to convert the structure to the corresponding name.
system
(4aR,6S,7R,8S,8aR)-6-(4-hydroxyphenyl)sulfanyl-7-[(4-methoxyphenyl)methoxy]-2-phenyl-4,4a,6,7,8,8a-hexahydropyrano[3,2-d][1,3]dioxin-8-ol The above is the IUPAC name of a molecule. Write its molecular formula.
user
C27H28O7S
assistant