Berbinium, 7,7',7''-((thiophosphinylidyne)tris(iminotrimethylenecarbonylmethylene)tris(9,10-dimethoxy-2,3-(methylenedioxy)-5,6,13,13a-tetradehydro- DR9893000 N',N'',N'''-Tri-(2-(N-acetonylberberinyl)ethylamide) of thiophosphoric acid