Synonyms: 2,2'-(1,5-Pentanediylbis(oxy(3-oxo-3,1-propanediyl)))bis(1-((3,4-dimethoxyphenyl)methyl)-1,2,3,4-tetrahydro-6,7-dimethoxy-2-methylisoquinolinium) dimethanesulphonate;2,2'-{pentane-1,5-diylbis[oxy(3-oxopropane-3,1-diyl)]}bis[1-(3,4-dimethoxybenzyl)-6,7-dimethoxy-2-methyl-1,2,3,4-tetrahydroisoquinolinium] dimethanesulfonate