Montelukast EP Impurity C (R isomer)

Chemical Name: 2-(1-(((S)-((R)-1-(3-((E)-2-(7-chloroquinolin-2-yl)vinyl)phenyl)-3-(2-(2-hydroxypropan-2-yl)phenyl)propyl)sulfinyl)methyl)cyclopropyl)acetic acid

Smile: O=C(O)CC1(C[S@@]([C@@H](C2=CC=CC(/C=C/C3=NC4=CC(Cl)=CC=C4C=C3)=C2)CCC5=CC=CC=C5C(C)(O)C)=O)CC1