S-isomer (Chiral) impurity

Chemical Name: bis(1-methylethyl) 5-{[(1s)-2-(6-amino-9H-purin-9-yl)-1-methylethoxy]methyl}-5-oxo-2,4,6,8-tetraoxa-5-λ5-phosphanonanedioate

Synonym: (S)-(((((1-(6-amino-9H-purin-9-yl)propan-2-yl)oxy)methyl)(((isopropoxycarbonyl)oxy)methoxy)phosphoryl)oxy)methyl isopropyl carbonate

Smile: O=P(OCOC(OC(C)C)=O)(OCOC(OC(C)C)=O)CO[C@](C)([H])CN1C=NC2=C(N)N=CN=C12