You are a chemist. Please follow the instructions to convert the structure to the corresponding name.
system
Can you give the molecular formula of the molecule [1-(4-chlorophenyl)-5-(trifluoromethyl)pyrazol-4-yl]-(4-ethylpiperazin-4-ium-1-yl)methanone ?
user
C17H19ClF3N4O+
assistant