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N-(2,4-DINITRO-PH)-N'-(2-PHENYL-4-P-TOLYL-4H-CHROMEN-3-YLMETHYLENE)-HYDRAZINE N-(2,4-DINITRO-PH)-N'-(2-PHENYL-4-P-TOLYL-4H-CHROMEN-3-YLMETHYLENE)-HYDRAZINE