Ulipristal Acetate N-Oxide Impurity

Chemical Name: 4-((8S,11R,13S,14S,17R)-17-acetoxy-17-acetyl-13-methyl-3-oxo-2,3,6,7,8,11,12,13,14,15,16,17-dodecahydro-1H-cyclopenta[a]phenanthren-11-yl)-N,N-dimethylaniline oxide

Smile: C[C@]([C@]1(C(C)=O)OC(C)=O)(C[C@@H]2C3=CC=C([N+](C)([O-])C)C=C3)[C@](CC1)([H])[C@@](CC4)([H])C2=C(CC5)C4=CC5=O