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 N-(2-methylpropyl)-N-(3-oxo-3-piperazin-1-ylpropyl)-4-(trifluoromethyl)benzamide;2,2,2-trifluoroacetic acid .
user
C21H27F6N3O4
assistant