You are a chemist. Please follow the instructions to convert the structure to the corresponding name.
system
[(4aR,6R,7S,8R,8aR)-6-benzylsulfonyl-8-methoxy-2-phenyl-4,4a,6,7,8,8a-hexahydropyrano[3,2-d][1,3]dioxin-7-yl]oxy-tert-butyl-dimethylsilane is the IUPAC name of a molecule. Please give its molecular formula.
user
C27H38O7SSi
assistant