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 2-[4-(2-methoxyphenyl)piperazin-1-ium-1-yl]-N-[(1R)-1-thiophen-2-ylethyl]acetamide .
user
C19H26N3O2S+
assistant