Bictegravir 2,4-Difluoro Impurity

Chemical Name: (2R,5S,13aR)-N-(2,4-difluorobenzyl)-8-hydroxy-7,9-dioxo-2,3,4,5,7,9,13,13a-octahydro-2,5-methanopyrido[1',2':4,5]pyrazino[2,1-b][1,3]oxazepine-10-carboxamide

Smile: FC1=CC(F)=C(CNC(C2=CN(C[C@]3([H])N([C@H]4CC[C@H](C4)O3)C5=O)C5=C(O)C2=O)=O)C=C1