2(5H)-Furanone, 4-(4,5-dihydro-5,5-dimethyl-1-(2-pyridinyl)-1H-pyrazol-3-yl)-3-hydroxy- 4-(4,5-Dihydro-5,5-dimethyl-1-(2-pyridinyl)-1H-pyrazol-3-yl)-3-hydroxy-2(5H)-furanone 61566-83-4