1,4-bis(1-chloro-2-methylprop-1-en-1-yl)piperazine InChI=1/C12H20Cl2N2/c1-9(2)11(13)15-5-7-16(8-6-15)12(14)10(3)4/h5-8H2,1-4H piperazine, 1,4-bis(1-chloro-2-methyl-1-propenyl)-