You are a chemist. Please follow the instructions to convert the structure to the corresponding name.
system
Provide the molecular formula for the IUPAC named substance [4-(6-pyrazol-1-ylpyridazin-3-yl)oxypiperidin-1-yl]-[2-(trifluoromethyl)phenyl]methanone .
user
C20H18F3N5O2
assistant