Elagolix N-oxide impurity

Chemical Name: Sodium (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)(hydroxy)amino)butanoate

Synonym: 2409132-62-1 (free base)

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=CC=CC(OC)=C4F)=O)C3=O)O.[Na+]