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 1,1,1,4,4,4-hexafluorobutane-2,3-dione;2-methyl-1-pyridin-4-ylpropan-1-one;2,2,2-trifluoroacetaldehyde .
user
C15H12F9NO4
assistant