This compound can be obtained by two related ways: 1) By cyclization of 1-(2-methoxyphenyl)-4-[2-(2-aminobenzoyl)amino-ethyl]piperazine (I) with trichloromethyl chloroformate, with triethylamine as condensing agent and methylene chloride as solvent. 2) By cyclization of 1-(2-methoxyphenyl)-4-[2-(2-aminobenzoyl)amino-ethyl]piperazine (I) with urea by heating at 180 C in DMF.