(6aR,9R,10aR)-7-allyl-N9-(3-(dimethylamino)propyl)-N4-ethyl-6a,7,8,9,10,10a-hexahydroindolo[4,3-fg]quinoline-4,9(6H)-dicarboxamide; N8-Desethylcarbamoyl-N1-ethylcarbamoyl Cabergoline; (8?)-N8-[3-(Dimethylamino)propyl]-N1-ethyl-6-(2-propen-1-yl)-ergoline-1,8-dicarboxamide; (8?)-N8-[3-(Dimethylamino)propyl]-N1-ethyl-6-(2-propenyl)-ergoline-1,8-dicarboxamide; Cabergoline EP Impurity B
