I would like to know the best method to synthesize benzoimidazole derivatives, this is my desired product( 5-bromo-2-(4-nitro-1H-pyrazol-3-yl)-1H-benzo[d]imidazole), from commercially 4-bromobenzene-1,2-diamine and 4- nitro-1H-pyrazole-3-carboxylic acid. In case if i want to use EDC coupling agent, HOBt. what is the best order of reagents and the best solvent except DMF?