You are a chemist. Please follow the instructions to convert the structure to the corresponding name.
system
1-[(1R)-1-(1-tert-butyltetrazol-5-yl)-3-methylbutyl]-4-(4-fluorophenyl)piperazin-1-ium The above is the IUPAC name of a molecule. Write its molecular formula.
user
C20H32FN6+
assistant