IUPAC:4-[(4R)-7-methyl-2,5-dioxo-1-[3-(trifluoromethyl)phenyl]-1H,2H,3H,4H,5H,6H,7H,8H-pyrimido[4,5-d]pyridazin-4-yl]benzonitrile
IUPAC:4-[(4R)-7-methyl-2,5-dioxo-1-[3-(trifluoromethyl)phenyl]-1H,2H,3H,4H,5H,6H,7H,8H-pyrimido[4,5-d]pyridazin-4-yl]benzonitrile