6-cyano-3,4-dihydro-4-((1,6-dihydro-1-methyl-6-oxo-3-pyridazinyl)amino)-2,2-bis(methoxymethyl)-2H-1-benzopyran-3-ol
6-cyano-3,4-dihydro-4-((1,6-dihydro-1-methyl-6-oxo-3-pyridazinyl)amino)-2,2-bis(methoxymethyl)-2h-1-benzopyran-3-ol