(R)-2-(2-Methylpyrrolidin-2-yl)-1H-benzo(d)imidazole-4-carboxamide dihydrochloride912445-05-7100 % similar Veliparib912444-00-994 % similar Niraparib1038915-60-430 % similar 2,3-Dimethoxybenzamide1521-39-730 % similar