C. 1 -{1-{4-oxo-4-[4-[4-(2,3-dihydro-2-oxo- 1H-benzimidazol-1-yl)-1-piperidyl]fenyl]butyl}-4-piperidyl}-1,3-dihydro-2H-benzimidazol-2-on,
C. 1 -{1-{4-oxo-4-[4-[4-(2,3-dihydro-2-oxo- 1H-benzimidazol-1-yl)-1-piperidyl]fenyl]butyl}-4-piperidyl}-1,3-dihydro-2H-benzimidazol-2-on,