Synonyms: Pentamethylene bis(1-(3,4-dimethoxybenzyl)-3,4-dihydro-6,7-dimethoxy-1H-isoquinoline-2-propionate), dioxalate;5-[3-[1-[(3,4-dimethoxyphenyl)methyl]-6,7-dimethoxy-3,4-dihydro-1H-isoquinolin-2-yl]propanoyloxy]pentyl 3-[1-[(3,4-dimethoxyphenyl)methyl]-6,7-dimethoxy-3,4-dihydro-1H-isoquinolin-2-yl]propanoate; oxalic acid;