You are a chemist. Please follow the instructions to convert the structure to the corresponding name.
system
Please write the molecular formula of the molecule 4-(4,5,6,7,8,9-hexafluoro-1,1,2-trimethyl-2H-benzo[e]indol-3-yl)butane-1-sulfonic acid .
user
C19H19F6NO3S
assistant