You are a chemist. Please follow the instructions to convert the structure to the corresponding name.
system
What is the molecular formula of the compound with this IUPAC name 3-chloro-9-fluoro-11,11-dioxo-5,6-dihydrobenzo[b][1]benzothiepine-2-sulfonyl chloride ?
user
C14H9Cl2FO4S2
assistant