You are a chemist. Please follow the instructions to convert the structure to the corresponding name.
system
For the molecule named [(2S,4aR,6S,7R,8R,8aS)-2-phenyl-6-phenylsulfanyl-8-(trifluoromethylsulfonyloxy)-4,4a,6,7,8,8a-hexahydropyrano[3,2-d][1,3]dioxin-7-yl] benzoate by IUPAC nomenclature, provide its molecular formula.
user
C27H23F3O8S2
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