Dihydroergotamine Mesylate Impurity 1

Chemical Name: (2R,4aR,10bR)-7-Amino-N-((2R,5S,10aS,10bS)-5-benzyl-10b-hydroxy-2-methyl-3,6-dioxooctahydro-8H-oxazolo[3,2-a]pyrrolo[2,1-c]pyrazin-2-yl)-4-methyl-6-oxo-1,2,3,4,4a,5,6,10b-octahydrobenzo[f]quinoline-2-carboxamide

Smile: O=C([C@H](C[C@]1([H])C2=CC=CC(N)=C23)CN(C)[C@]1([H])CC3=O)N[C@@](O4)(C)C(N5[C@]4(O)[C@@](CCC6)([H])N6C([C@@H]5CC7=CC=CC=C7)=O)=O