Chemical Name: (1R,2R)-1-[(3,4-dimethoxyphenyl)methyl]-2-[3-[3-[[5-[[3-[(1R,2R)-1-[(3,4-dimethoxyphenyl)methyl]-6,7-dimethoxy-2-methyl-3,4-dihydroisoquinolinium-2(1H)-yl]propanoyl]oxy]pentyl]oxy]-3-oxopropoxy]-3 -oxopropyl]-6,7-dimethoxy-2-methyl-1,2,3,4-tetrahydroisoquinolinium Dibenzenesulfonate (as per EP)