1H-benzimidazole-2-butanoic acid, 5-[bis(2-chloroethyl)amino]-1-methyl- 3543-75-7 4-{5-[bis(2-chloroethyl)amino]-1-methyl-1H-benzimidazol-2-yl}butanoic acid InChI=1/C16H21Cl2N3O2/c1-20-14-6-5-12(21(9-7-17)10-8-18)11-13(14)19-15(20)3-2-4-16(22)23/h5-6,11H,2-4,7-10H2,1H3,(H,22,23