You are a chemist. Please follow the instructions to convert the structure to the corresponding name.
system
5-[[2,6-difluoro-4-(2-fluoro-4-methylphenyl)phenoxy]methyl]-2-(5,6,7-trifluoronaphthalen-2-yl)-1,3-dioxane is the IUPAC name of a molecule. Please give its molecular formula.
user
C28H20F6O3
assistant