Montelukast Impurity 4

Chemical Name: 2-(1-((((1R)-1-(3-((1R)-2-(7-chloroquinolin-2-yl)-1-((2-((2-ethylhexyl)oxy)-2-oxoethyl)thio)ethyl)phenyl)-3-(2-(2-hydroxypropan-2-yl)phenyl)propyl)thio)methyl)cyclopropyl)acetic acid

Smile: O=C(O)CC1(CS[C@@H](C2=CC=CC([C@H](SCC(OCC(CC)CCCC)=O)CC3=NC4=CC(Cl)=CC=C4C=C3)=C2)CCC5=CC=CC=C5C(C)(O)C)CC1