3-hydroxy-2,2-dimethyl-3,4-dihydro-4-((1,6-dihydro-1-methyl-6-oxo-3-pyridazinyl)oxy)-2H-1-benzopyran-5-carbonitril
3-hydroxy-2,2-dimethyl-3,4-dihydro-4-((1,6-dihydro-1-methyl-6-oxo-3-pyridazinyl)oxy)-2h-1-benzopyran-5-carbonitril