Posaconazole 3-OXO impurity

Chemical Name: 4-(4-(((3R,5R)-5-((1H-1,2,4-triazol-1-yl)methyl)-5-(2,4-difluorophenyl)tetrahydrofuran-3-yl)methoxy)phenyl)-1-(4-(1-((2S,3S)-2-hydroxypentan-3-yl)-5-oxo-1,5-dihydro-4H-1,2,4-triazol-4-yl)phenyl)piperazin-2-one

Smile: FC1=C(C=CC(F)=C1)[C@]2(C[C@H](COC3=CC=C(N(CCN4C5=CC=C(N(C=NN6[C@@H](CC)[C@@H](O)C)C6=O)C=C5)CC4=O)C=C3)CO2)CN7C=NC=N7