Elagolix Nitroso Impurity

Chemical Name: (R)-4-((2-(5-(2-Fluoro-3-methoxyphenyl)-3-(2-fluoro-6-(trifluoromethyl)benzyl)-4-methyl-2,6-dioxo-3,6-dihydropyrimidin-1(2H)-yl)-1-phenylethyl)(nitroso)amino)butanoic acid

Smile: O=C(O)CCCN([C@H](C1=CC=CC=C1)CN(C(N(CC2=C(C(F)(F)F)C=CC=C2F)C(C)=C3C4=C(C(OC)=CC=C4)F)=O)C3=O)N=O