Berbinium, 5,6,13,13a-tetradehydro-7-(5-((di(1-aziridinyl)thiophosphinyl)amino)-2-oxopentyl)-9,10-dimethoxy-2,3-(methylenedioxy)- DR9866300 N'-(2-(Acetonylberberinyl)ethylamide) of diaziridinylthiophosphoric acid