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