N,N′-Dimethyl-3,3′-dinitro-4H,4′H-4,4′-bichromene-2,2′-diamine

[4,4′-Bi-4H-1-benzopyran]-2,2′-diamine, N~2~,N~2′~-dimethyl-3,3′-dinitro-

N,N′-Dimethyl-3,3′-dinitro-4H,4′H-4,4′-bichromen-2,2′-diamin

N,N′-Dimethyl-3,3′-dinitro-4H,4′H-4,4′-bichromene-2,2′-diamine

N,N′-Diméthyl-3,3′-dinitro-4H,4′H-4,4′-bichromène-2,2′-diamine

N2-Methyl-4-[2-(methylamino)-3-nitro-4H-4-chromenyl]-3-nitro-4H-2-chromenamine