You are a chemist. Please follow the instructions to convert the structure to the corresponding name.
system
3,3,3-trifluoro-2-[3,5,6,6,6-pentafluoro-5-(6,6,6-trifluoro-3-methylhexan-3-yl)oxyhexan-3-yl]oxypropanoyl chloride is the IUPAC name of a molecule. Please give its molecular formula.
user
C16H20ClF11O3
assistant