Chemical Name: Diethyl (S)-(2-((4-((3-chloro-4-fluorophenyl)amino)-7-((tetrahydrofuran-3-yl)oxy)quinazolin-6-yl)amino)-2-oxoethyl)phosphonate
Synonym: Rizatriptan N-Oxide (Impurity C)
Smile: ClC1=C(F)C=CC(NC2=NC=NC3=C2C=C(NC(C[P](OCC)(OCC)=O)=O)C(O[C@H]4CCOC4)=C3)=C1