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(2007/10/02)3-methylaminobut-2-enoic acid methyl ester
4-(4,5-Dimethoxy-2-nitro-phenyl)-1,2-dimethyl-1H-pyrrole-3-carboxylic acid methyl ester
-1,2-dimethoxy-4-nitro-5-(2-nitrovinyl)-benzene
4-(4,5-Dimethoxy-2-nitro-phenyl)-5-formyl-1,2-dimethyl-1H-pyrrole-3-carboxylic acid methyl ester