Nicergoline EP Impurity J

((6aR,6’aR,9R,9’R,10aS,10’aS)-10a,10’a-dimethoxy-4′,7,7′-trimethyl-4′,6a,6′,6’a,7,7′,8,8′,9,9′,10,10a,10′,10’a-tetradecahydro-6H-[4,5′-biindolo[4,3-fg]quinoline]-9,9′-diyl)bis(methylene)bis(5-bromonicotinate)