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 (2R)-N-methyl-N-phenyl-2-[4-[3-(trifluoromethyl)phenyl]piperazin-1-ium-1-yl]propanamide .
user
C21H25F3N3O+
assistant