You are a chemist. Please follow the instructions to convert the structure to the corresponding name.
system
[2-(7-fluoro-2,3-dimethyldibenzofuran-4-yl)-1-methylquinolin-1-ium-7-yl]-trimethylsilane The above is the IUPAC name of a molecule. Write its molecular formula.
user
C27H27FNOSi+
assistant