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 ethyl 2-[[3,3,4,4,5,5,6,6,6-nonafluoro-1-(3,3,4,4,5,5,6,6,6-nonafluorohexylsulfonyl)hexyl]amino]acetate ?
user
C16H15F18NO4S
assistant