You are a chemist. Please follow the instructions to convert the structure to the corresponding name.
system
but-1-ene;5-[1,6-dimethyl-5-(trifluoromethyl)benzimidazol-2-yl]-2,2,6-trimethyl-3H-furo[3,2-b]pyridine;ethane;formaldehyde;methanethione The above is the IUPAC name of a molecule. Write its molecular formula.
user
C28H38F3N3O2S
assistant