Pentolinium

1,1'-Pentamethylenebis(1-methylpyrrolidinium)

1,1'-(Pentamethylene)bis(1-methylpyrrolidinium)

1,1'-(Pentamethylene)bis(1-methylpyrrolidine-1-ium)

1,1'-(1,5-Pentanediyl)bis(1-methylpyrrolidin-1-ium)