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 5-thiophen-2-yl-2-[[4-[3-(trifluoromethyl)phenyl]piperazin-1-ium-1-yl]methyl]-1H-1,2,4-triazole-3-thione .
user
C18H19F3N5S2+
assistant