Montelukast Dihydro Impurity

Chemical Name: (R)-2-(1-(((1-(3-(2-(7-chloroquinolin-2-yl)ethyl)phenyl)-3-(2-(2-hydroxypropan-2-yl)phenyl)propyl)thio)methyl)cyclopropyl)acetic acid, sodium salt

Smile: ClC1=CC=C2C(N=C(CCC3=CC=CC([C@H](SCC4(CC4)CC(O)=O)CCC5=CC=CC=C5C(C)(C)O)=C3)C=C2)=C1.[Na]