6-cyano-3,4-dihydro-2,2-dimethyl-2H-3-hydroxy-4-(2-oxo-1-(hydroxymethyl)-1-pyrrolidinyl)-1-benzopyran
6-cyano-3,4-dihydro-2,2-dimethyl-2h-3-hydroxy-4-(2-oxo-1-(hydroxymethyl)-1-pyrrolidinyl)-1-benzopyran