1,4-dihydro-2,6-dimethyl-3-nitro-4-(2-nitrophenyl)pyridine-5-carboxy-4-(1,4,5,6-tetrahydro-6-oxo-3-pyridazinyl)benzyl ester
1,4-dihydro-2,6-dimethyl-3-nitro-4-(2-nitrophenyl)pyridine-5-carboxy-4-(1,4,5,6-tetrahydro-6-oxo-3-pyridazinyl)benzyl ester