1,2,4-Oxadiazole, 5-methyl-3-(5-nitro-2-furanyl)- 1,2,4-Oxadiazole, 5-methyl-3-(5-nitro-2-furyl)- 5-Methyl-3-(5-nitro-2-furanyl)-1,2,4-oxadiazole 63-61-6