You are a chemist. Please follow the instructions to convert the structure to the corresponding name.
system
Translate the chemical IUPAC name 1-[(1R)-1-[1-(2-methoxyethyl)tetrazol-5-yl]butyl]-4-(4-methoxyphenyl)piperazin-1-ium into its molecular formula.
user
C19H31N6O2+
assistant