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 N-[(2S)-butan-2-yl]-2-[3,5-dimethyl-1-[3-(trifluoromethyl)phenyl]pyrazol-4-yl]-2-oxoacetamide .
user
C18H20F3N3O2
assistant