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N(1)-(2,4-DINITRO-PH)-4-METHYL-N(3)-PYRIDIN-4-YLMETHYLENE-BENZENE-1,3-DIAMINE N(1)-(2,4-DINITRO-PH)-4-METHYL-N(3)-PYRIDIN-4-YLMETHYLENE-BENZENE-1,3-DIAMINE