preferred_name: 3-((4-OXO-4-(3-(TRIFLUOROMETHYL)-5,6-DIHYDRO-(1,2,4)TRIAZOLO(4,3-A)PYRAZIN-7(8H)-YL)-1-(2,4,5-TRIFLUOROPHENYL)BUTAN-2-YL)AMINO)-1-(3-(TRIFLUOROMETHYL)-5,6-DIHYDRO-(1,2,4)TRIAZOLO(4,3-A)PYRAZIN-7(8H)-YL)-4-(2,4,5-TRIFLUOROPHENYL)BUT-2-EN-1-ONE, (R,Z)-