2H-1,3-Benzoxazin-4(3H)-one, 3-hydroxy-2-(5-nitro-2-furyl)- 3-Hydroxy-2-(5-nitro-2-furyl)-2H-1,3-benzoxazin-4(3H)-one 4H-2,3-Dihydro-2-(5'-nitro-2'-furyl)-3-hydroxy-1,3-benzoxazine-4-one DM3896000