You are a chemist. Please follow the instructions to convert the structure to the corresponding name.
system
(3-fluoro-4-methoxyphenyl) 4-(6-ethenyl-1,2,3,4,4a,5,6,7,8,8a-decahydronaphthalen-2-yl)-3,5-difluorobenzoate is the IUPAC name of a molecule. Please give its molecular formula.
user
C26H27F3O3
assistant