Dihydroergocristine Mesilate EP Impurity D

Chemical Name: (6aR,9R,10aR)-N-[(2R,5S,10aS,10bS)-10b-hydroxy-2-methyl-5-(1-methylethyl)-3,6-dioxooctahydro-8H-oxazolo[3,2-a]pyrrolo[2,1-c]pyrazin-2-yl]-7-methyl-4,6,6a,7,8,9,10,10a-octahydroindolo[4,3-fg]quinoline-9-carboxamide (dihydroergosine)

Smile: O=C(N[C@]1(C)O[C@@](O)([C@]2([H])CCCN2C([C@@H]3C(C)C)=O)N3C1=O)[C@@H](CN([C@@]4(CC5=CNC6=C5C7=CC=C6)[H])C)C[C@@]47[H]