You are a chemist. Please follow the instructions to convert the structure to the corresponding name.
system
8,9,10,10,11,11-hexakis(trifluoromethyl)-4-oxatricyclo[5.2.2.02,6]undec-8-ene-3,5-dione is the IUPAC name of a molecule. Please give its molecular formula.
user
C16H4F18O3
assistant