(E)-7-Hydroxy-4-(2-(5-nitro-2-furanyl)ethenyl)-2H-1-benzopyran-2-one 2H-1-Benzopyran-2-one, 7-hydroxy-4-(2-(5-nitro-2-furanyl)ethenyl)-, (E)- 68746-86-1 7-Hydroxy-4-(2-(5-nitro-2-furyl)vinyl)coumarin